Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Fluid engineering

Institutional Collaboration, 1998, -, Thermal Engineering, 0100 (Japanese Only)

Institutional Collaboration, 2006, -, Environmental Technology/Environme ntal Material, 0100 (Japanese Only)

Institutional Collaboration, 2005, -, Environmental Technology/Environme ntal Material, 0100 (Japanese Only)

Personal, 2006, -, Environmental Technology/Environme ntal Material, 0100 (Japanese Only)

Domestic Collaboration, 2006, -, 0100 (Japanese Only)

No, No, No, 第76巻, 第4号, 189, 197, Scientific journal

No, No, No, Mar. 2026, 70, 3, 149, 154, Scientific journal

Quantitative Morphological Analysis of Rust Streak Formation and Underlying Substrate Profile Changes Under Controlled Droplet Supply, Yuya Ishida, Yukinari Koyano, Takuma Adachi, Atsushi Nozaka, Aya Shimizu, Mayuko Yamada, Kenji Amagai, No, Yes, Yes, 15 May 2026, Corrosion and Materials Degradation, 7, 2, 31, Scientific journal

Reheating and Roller Forming of Aluminum Foam Fabricated by Foaming Precursor, Yoshihiko Hangai, Kentaro Ishiuchi, Kenji Amagai, Nobuhiro Yoshikawa, No, No, No, 02 Mar. 2026, Solids, 7, 2, 13, Scientific journal

Roller Joining of AA1050 and AA6061 Aluminum Foam Immediately After Heating Process, Yoshihiko Hangai, Shingo Nagatake, Ryosuke Suzuki, Kenji Amagai, Nobuhiro Yoshikawa, No, No, No, 16 Jan. 2026, Metals, 16, 1, 102, Scientific journal

Estimation of Respiratory States Based on a Measurement Model of Airflow Characteristics in Powered Air-Purifying Respirators Using Differential Pressure and Pulse Width Modulation Control Signals—In the Development of a Public-Oriented Powered Air-Purifying Respirator as an Alternative to Lockdown Measures, Yusaku Fujii, Akihiro Takita, Seiji Hashimoto, Kenji Amagai, No, Yes, No, 2025, Sensors, 25, 9, 2939, Scientific journal

No, No, No, 2025, Vol. 9, No. 1, 1, 17, Scientific journal

Development of an Evaluation System for the Flow Rate Characteristics of a Supply Unit in a Powered Air-Purifying Respirator: Dependency on Differential Pressure, Voltage, and PWM Duty Value, Yusaku Fujii, Akihiro Takita, Seiji Hashimoto, Noriaki Yoshiura, Takao Yamaguchi, Kenji Amagai, Chihiro Kamio, Edwin Carcasona, Ronald M Galindo, No, No, No, 2025, Journal of Mechanical and Electrical Intelligent System, Vol.8, No.1, 24, 34, Scientific journal

New Apparatus and Evaluation Method for Salt Spray Tests, Yuya Ishida, Yasuhiro Shitara, Daisuke Miki, Madoka Murai, Mayuko Yamada, Norikazu Sakuma, Kenji Amagai, No, Yes, No, 25 Apr. 2025, Journal of the Institute of Industrial Applications Engineers, 13, 2, 61, 68

Continuous Fabrication Process of Aluminum Foam from Foaming to Press Forming, Yoshihiko Hangai, Yuito Kaneko, Kenji Amagai, No, No, No, 04 Jun. 2025, Metals, 15, 6, 633, Scientific journal

Development and Evaluation of Dependency of Flow Rate on Differential Pressure Evaluation Device, Akira Iizuka, Ronald M Galindo, Edwin Carcasona, Kenji Amagai, Akihiro Takita, Yusaku Fujii, No, No, No, 2024, Journal of Mechanical and Electrical Intelligent System, 7, 1, 12, 26, Scientific journal

Development and Evaluation of Dependency of Flow Rate on Differential Pressure Evaluation Device, Akira Iizuka, Ronald M Galindo, Edwin Carcasona, Kenji Amagai, Akihiro Takita, and Yusaku Fujii, No, No, No, 2024, Journal of Mechanical and Electrical Intelligent System, 7, 1, 12, 26, Scientific journal

No, No, No, Jul. 2024, 65, 762, 95, 99, Scientific journal

No, Yes, Apr. 2024, 74, 4, 198, 201, Scientific journal

Fabrication of Two-Layer Aluminum Foam Consisting of Dissimilar Aluminum Alloys Using Optical Heating, Yoshihiko Hangai, Tatsuki Takagi, Yu Goto, Kenji Amagai, No, Yes, No, 15 Feb. 2024, Materials, 17, 4, 894, Scientific journal

Fabrication of Composite of Al-Si-Cu Alloy Foam Core Surrounded by Pure Aluminum Foam and Its Compression Properties, Takao Utsunomiya, Yoshihiko Hangai, Kenji Amagai, Sinji Hashimura, No, No, No, 13 Dec. 2023, Journal of Materials Engineering and Performance, 32, 23, 10582, 10590, Scientific journal

15 Oct. 2023, 73, 10, 504, 509, Scientific journal

Behaviors of Bubbles Trapped in Film Coating during Spray Gun Coating and Its Influences on Coating Defects, Ryo Noguchi, Ayako Yano, Kenji Amagai, No, Yes, No, 30 Oct. 2023, Coatings, 13, 1860, Scientific journal

Machine Learning Estimation of Plateau Stress of Aluminum Foam Using X-ray Computed Tomography Images, Yoshihiko Hangai, So Ozawa, Kenji Okada , Yuuki Tanaka, Kenji Amagai, Ryosuke Suzuki, No, No, No, 24 Feb. 2023, Materials, 16, 1894

No, Yes, No, 2022, 86, 2, 30, 33, Scientific journal

No, Yes, No, Jan. 2022, 86, 1, 17, 21, Scientific journal

No, Yes, No, Jan. 2023, 73, 1, 31, 35, Scientific journal

No, No, No, 28 Dec. 2022, 6, 1, 1, 9, Scientific journal

Co-development of Low-speed Electric Community Buses for Local Area Revitalization, Kenji Amagai, Hiroto Kotake, Masahiro Munemura, Sawako Shigeto, Masayuki Horio, Yes, No, Yes, 02 Feb. 2023, Journal of Energy and Power Technology, 5, 1, doi:10.21926/jept.2301005, Scientific journal

Low-Cost Powered Air-Purifying Respirator (PAPR) “Distancing-Free Mask Frontline (DFM-F) Prototype No.1” for the Operational Tests in Hospitals in Cebu City, Philippines, Ronald M. Galindo, Akihiro Takita, Edwin Carcasona, Ethelda Magalang, Tabetha S. Galindo, Seiji Hashimoto, Takao Yamaguchi, Edgar U. Tibay, Dongwei Shu, Haruo Kobayashi, Kenji Amagai, Naoya Ohta, Nori, No, No, No, 07 May 2022, Journal of Mechanical and Electrical Intelligent System, 5, 2, 1, 6, Scientific journal

Very-Low-Cost Powered Air-Purifying Respirator (PAPR) “Distancing-Free Mask Industry (DFM-I) Prototype No.1” and Proposal for a Lockdown-Free Industry, Edwin Carcasona, Ronald M. Galindo, Akihiro Takita, Ethelda Magalang, Tabetha S. Galindo, Seiji Hashimoto, Takao Yamaguchi, Edgar U. Tibay, Dongwei Shu, Haruo Kobayashi, Kenji Amagai, Naoya Ohta, Nori, No, No, No, 07 May 2022, Journal of Technology and Social Science, 6, 2, 1, 4

No, No, No, 20 May 2022, 70, 3, 33, 40, Scientific journal

Evaluation of Coating Film Formation Process Using the Fluorescence Method, Ayako Yano, Kyoichi Hamada, Kenji Amagai, No, Yes, No, 06 Sep. 2021, Coatings, 11, 1076, 1, 12, Scientific journal

X-ray Radiography Inspection of Pores of Thin Aluminum Foam during Press Forming Immediately after Foaming, Yoshihiko Hangai, Daisuke Kawato, Masataka Ohashi, Mizuki Ando, Takuya Ogura, Yoshiaki Morisada, Hidetoshi Fujii, Yuichiroh Kamakoshi, Hironao Mitsugi, Kenji Amagai, No, Yes, No, 31 Jul. 2021, Metals, 11, 1226, 1, 10, Scientific journal

Classification of Mechanical Properties of Aluminum Foam by Machine Learnin, Yoshihiko Hangai, Kenji Okada, Yuuki Tanaka, Tsutomu Matsuura, Kenji Amagai, Ryosuke Suzuki, Nobuaki Nakazawa, No, No, No, 17 Dec. 2021, Materials Transactions, 63, 2, 257, 260, Scientific journal

Continuous Foaming of Multiple Aluminum Foam Precursors by Combining Conveyor and Optical Heating, Yoshihiko Hangai, Masataka Ohashi, Ryohei Nagahiro, Kenji Amagai, Takao Utsunomiya, Nobuhiro Yoshikawa, No, No, No, 03 Jul. 2020, Materials Transactions, 61, 8, 1703, 1706

Roll forming of aluminum foam immediately after precursor foaming, Yoshihiko Hangai, Kodai Suzuki, Masataka Ohashi, Hironao Mitsugi, Kenji Amagai, No, Yes, No, Jun. 2021, Results in Engineering, 10, 100224, Scientific journal

Continuous production of dissimilar alloy porous aluminum by conveyor with optical heating, No, No, No, Apr. 2021, 71, 4, 177, 179, Scientific journal

No, Yes, No, 28 Mar. 2021, 69, 2, 24, 31, Scientific journal

Experimental and Modeling Investigation of the Mechanism for Preventing Readhesion via Zeta Potential in the Spin-Rinse Process, Naoyuki Handa , Hirokuni Hiyama, Kenji Amagai, Ayako Yano, No, No, No, 24 Mar. 2021, ECS Journal of Solid State Science and Technology, 10, 4, 044002, Scientific journal

Fabrication of Two-Layered Aluminum Foam with Closed-Cell and Open-Cell Structures and Shaping of Closed-Cell Layer by Press Forming Immediately after Foaming, Yoshihiko Hangai; Mizuki Ando; Masataka Ohashi; Kenji Amagai, 12 Jan. 2021, Metals, 11, 1, 140, 140, Scientific journal

No, No, No, 2021, 5, 1, 8, 16, Scientific journal

Nondestructive observation of pores during press forming of aluminum foam by X-ray radiography, Yoshihiko Hangai; Daisuke Kawato; Mizuki Ando; Masataka Ohashi; Yoshiaki Morisada; Takuya Ogura; Hidetoshi Fujii; Ryohei Nagahiro; Kenji Amagai; Takao Utsunomiya; Nobuhiro Yoshikawa, Dec. 2020, Materials Characterization, 170, 110631, 110631, Scientific journal

Trial through Communication Games for Teamwork Skill Enhancement at First-year Students in Science and Technology Course, Hiroyuki Matsumoto; Kenji Amagai; Yasushi Yuminaka, Dec. 2020, ASEAN Journal of Engineering Education, 4, 2, 1, 7, Scientific journal

Jointing of porous aluminum by press forming of multiple precursors during foaming process, Masataka Ohashi; Yoshihiko Hangai; Kenji Amagai; Masaaki Matsubara; Ryosuke Suzuki; Takao Utsunomiya; Nobuhiro Yoshikawa, 15 Nov. 2020, Journal of Japan Institute of Light Metals, 70, 11, 517, 522, Scientific journal

Compressive properties of two-layered aluminum foams with closed-cell and open-cell structures, Yoshihiko Hangai; Mizuki Ando; Masataka Ohashi; Kenji Amagai; Ryosuke Suzuki; Masaaki Matsubara; Nobuhiro Yoshikawa, Sep. 2020, Materials Today Communications, 24, 101249, 101249, Scientific journal

Experimental and Modelling Investigation of Re-Adhesion Mechanism of Detached Nanoparticles to Wafer Surface in Spin Rinse Process, N. Handa; H. Hiyama; K. Amagai; A. Yano, 02 Jul. 2020, ECS Journal of Solid State Science and Technology, 9, 6, 064001, 064001, Scientific journal

Career Education for First Year Students of Science and Technology to Improve Awareness of Working in Society, Jul. 2020, ASEAN Journal of Engineering Education, 4, 42, 51, Scientific journal

Press forming of aluminum foam during foaming using pin screen mold, Yoshihiko Hangai; Takumi Tomaru; Masataka Ohashi; Kenji Amagai; Takao Utsunomiya; Nobuhiro Yoshikawa, 15 May 2020, Journal of Japan Institute of Light Metals, 70, 5, 194, 196, Scientific journal

Fabrication of aluminum foam with complex shapes using pin screen mold and effect of arrangement of pins on its surface morphology, Yoshihiko Hangai; Keita Takahashi; Ryohei Nagahiro; Kenji Amagai; Takao Utsunomiya; Nobuhiro Yoshikawa, Apr. 2020, JOURNAL OF POROUS MATERIALS, 27, 2, 347, 353, Scientific journal

Foaming of A1050 aluminum precursor by generated frictional heat during friction stir processing of steel plate, Yoshihiko Hangai; Keisuke Takada; Hidetoshi Fujii; Yasuhiro Aoki; Yuma Aihara; Ryohei Nagahiro; Kenji Amagai; Takao Utsunomiya; Nobuhiro Yoshikawa, Feb. 2020, INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 106, 7-8, 3131, 3137, Scientific journal

Education Reform for First Year Students of Faculty of Science and Technology, Hiroyuki MATSUMOTO; Kenji AMAGAI; Yasushi YUMINAKA, 2020, Journal of JSEE, 68, 3, 3_39, 3_45, Scientific journal

Droplet Evaporation and Watermark Formation on Si Wafers with Various Films, 2020, Journal of the Japan Society for Precision Engineering, 86, 1, 65, 70

Education Reform for First Year Students of Faculty of Science and Technology, Hiroyuki MATSUMOTO; Kenji AMAGAI; Yasushi YUMINAKA, 2020, Journal of JSEE, 68, 4, 4_11, 4_16, Scientific journal

Uniform Heating Model Analysis for the Formation Process of Aluminium Foam by Spot-Type Halogen Lamp, Dec. 2019, International Journal of Automotive and Mechanical Engineering, 16, 4, 7170, 7180

高齢者居住地域に導入された低速電動バスによる地域の自然発生的な見守り効果, 小竹裕人; 舩津賢人; 天谷賢児; 関 庸一; 宝田恭之; 根津紀久雄; 佐羽宏之; 登丸貴之; 大橋 司; 清水宏康; 宗村正弘, Oct. 2019, 社会安全とプライバシー, 3, 1, 15, 27, Scientific journal

安全安心なモビリティとして開発された低速電動バスによるコミュニケーション空間の創出に向けた一考察, 小竹裕人; 舩津賢人; 天谷賢児; 宝田恭之; 根津紀久雄; 宗村正弘; 登丸貴之; 大橋 司; 清水宏康; 佐羽宏之, Oct. 2019, 社会安全とプライバシー, 3, 1, 1, 14, Scientific journal

Study on Energy Recovery Ventilator with Water Spray Cooling System, Ayako Yano; Takuya Nakasaka; Kenji Amagai; Masahisa Uenishi; Takashi Matsuzaki, Sep. 2019, Journal of Technology and Social Science, 3, 1

Experimental Study of Comfortable Outdoor Space Formation at High-temperature Season by Tree Planting with Spray System, Aug. 2019, 4, 198, 203

Visualization of the Paint Film Formation Process during Spray Coating, Aug. 2019, 4, 43, 48

Refoaming of deformed aluminum foam by precursor foaming process, Yoshihiko Hangai; Hayato Matsushita; Ryosuke Suzuki; Shinji Koyama; Kenji Amagai; Ryohei Nagahiro; Takao Utsunomiya; Masaaki Matsubara; Nobuhiro Yoshikawa, Aug. 2019, JOURNAL OF POROUS MATERIALS, 26, 4, 1149, 1155, Scientific journal

Shaping of Aluminum Foam during Foaming of Precursor Using Steel Mesh with Various Opening Ratios, Yoshihiko Hangai; Ryohei Nagahiro; Masataka Ohashi; Kenji Amagai; Takao Utsunomiya; Nobuhiro Yoshikawa, Feb. 2019, METALS, 9, 2, Scientific journal

2019, 14, 1, 7

Measurement of Liquid Film Thickness Accumulated on Surface Machined by Minimum Quantity Lubrication (MQL), 2019, 58, 581, 118, 125

Press Forming of Aluminum Foam during Foaming of Precursor, Yoshihiko Hangai; Masataka Ohashi; Ryohei Nagahiro; Kenji Amagai; Takao Utsunomiya; Nobuhiro Yoshikawa, 2019, MATERIALS TRANSACTIONS, 60, 11, 2464, 2469, Scientific journal

金網金型による発泡アルミニウム発泡時の形状付与, 半谷禎彦; 鶴見望; 天谷賢児; 宇都宮登雄; 吉川暢宏, 01 Dec. 2018, 日本金属学会誌, 82, 12, 484, 486

Forming of aluminum foam using steel mesh as die during foaming of precursor by optical heating, Yoshihiko Hangai; Kenji Amagai; Kazuki Omachi; Nozomi Tsurumi; Takao Utsunomiya; Nobuhiro Yoshikawa, Dec. 2018, OPTICS AND LASER TECHNOLOGY, 108, 496, 501, Scientific journal

Fabrication of Two-Layered Aluminum Foam Having Layers with Closed-Cell and Open-Cell Pores, Yoshihiko Hangai; Hiroki Ikeda; Kenji Amagai; Ryosuke Suzuki; Masaaki Matsubara; Nobuhiro Yoshikawa, Oct. 2018, METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 49A, 10, 4452, 4455, Scientific journal

Shaping of Aluminum Foam Using Point Group Mold, Yoshihiko Hangai; Keita Takahashi; Ryohei Nagahiro; Kenji Amagai; Takao Utsunomiya, 2018, MATERIALS TRANSACTIONS, 59, 12, 1952, 1955, Scientific journal

Forming of Aluminum Foam Using Light-Transmitting Material as Die during Foaming by Optical Heating, Yoshihiko Hangai; Kenji Amagai; Nozomi Tsurumi; Kazuki Omachi; Katsushige Shimizu; Kiyotaka Akimoto; Takao Utsunomiya; Nobuhiro Yoshikawa, 2018, MATERIALS TRANSACTIONS, 59, 11, 1854, 1859, Scientific journal

Shaping of Aluminum Foam during Foaming Process Using Stainless Steel Mesh Mold, Yoshihiko Hangai; Nozomi Tsurumi; Kenji Amagai; Takao Utsunomiya; Nobuhiro Yoshikawa, 2018, JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, 82, 12, 484, 486, Scientific journal

2017, 3, 4, No.00076

Measurement of Interfacial Profiles of Wavy Film Flow on Inclined Wall, N. Rosli; K. Amagai, 03 Mar. 2016, IOP Conference Series: Materials Science and Engineering, 114, 1, International conference proceedings

2016, 3, 6, No.16-00169

Study of Liquid Film Flow Structure on Inclined Wall Using Photochromic Dye Marking Method, ROSLI Nurrina; AMAGAI Kenji, 2015, 15, 0, s21, s25

Measurement of liquid sheet using laser tagging method by photochromic dye, Nurrina Binti Rosli; Kenji Amagai, 19 Nov. 2014, Experiments in Fluids, 55, 12, 1843, Scientific journal

Development of low-CO2-emission vehicles and utilization of local renewable energy for the vitalization of rural areas in Japan, Kenji Amagai; Takayuki Takarada; Masato Funatsu; Kikuo Nezu, 2014, IATSS Research, 37, 2, 81, 88

Simultaneous Measurement of Liquid Surface and Wave Velocities for Falling Liquid Films, ROSLI Nurrina; AMAGAI Kenji, 2014, Journal of the Japanese Society for Experimental Mechanics, 14, 0, s19, s24

2014, 6, 2, 92, 104

2014, 14, s25-s29

2012, 11, 2, 147

2012, 15, 5

Velocity and Vorticity Measurement in Flow Field Using Laser Tagging Method by Photochromic Dye, ROSLI Nurrina; TOYOOKA Youichi; AMAGAI Kenji, 31 Aug. 2011, Journal of the Japanese Society for Experimental Mechanics, 11, SS147, SS152

Growth characteristics of polycyclic aromatic hydrocarbons in dimethyl ether diffusion flame, Kazuhiro Hayashida; Toshio Mogi; Kenji Amagai; Masataka Arai, Feb. 2011, FUEL, 90, 2, 493, 498, Scientific journal

Fundamental characteristics of ultra-micro gas turbine combustor using liquid fuel, Kenji Amagai; Masahiro Fukai; Tadafumi Kurogi; Motohide Murayama, 2011, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 77, 776, 911, 915, Scientific journal

2010, 24, 4, 454, 461

2010, 19, 66, 66, 72

Effect of fuel properties on diffusion combustion of kerosene, Kazuhiro Hayashida; Katsuhiko Haji; Kenji Amagai; Masataka Arai, 2009, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 75, 752, 817, 823, Scientific journal

2009, 44, 1, 157, 163

Fundamental study on fuel atomization for a micro gas turbine, Kenji Amagai; Motohide Murayama; Masahiro Fukai; Tadafumi Kurogi, 2009, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 75, 751, 517, 518, Scientific journal

Termal Decomposition and Combustion Behavior of Prastics with Flame Retardant, Tomohiko Furuhata; Yasuo Yamamoto; Akira Shii; Kenji Amagai; Masataka Arai, 2009, Journal of Environment and Enginerring, Vol.4, No.2, 164, 175

Soot precursor measurements in benzene and hexane diffusion flames, Y. Kobayashi; T. Furuhata; K. Amagai; M. Arai, Aug. 2008, COMBUSTION AND FLAME, 154, 3, 346, 355, Scientific journal

2008, 74, 738, 745, 481

2008, 74-741, 1161, 1175

Flame characteristics in a wick combustion of GTL kerosene, Kazuhiro Hayashida; Yoshihiko Aihara; Kenji Amagai; Masataka Arai, Oct. 2007, Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy, 86, 10, 806, 813, Scientific journal

Thermal gasification behavior of plastics with flame retardant, Akira Ishii; Kenji Amagai; Tomohiko Furuhata; Masataka Arai, Oct. 2007, FUEL, 86, 15, 2475, 2484, Scientific journal

2007, 73, 734, 2160, 2168

2007, 16, 55, 63, 68

Measurement of fuel concentration distribution in a sooting flame through Raman scattering, K Hayashida; K Amagai; K Satoh; M Arai, May 2006, JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING, 49, 2, 512, 519, Scientific journal

Experimental analysis of soot formation in sooting diffusion flame by using laser-induced emissions, K Hayashida; K Amagai; K Satoh; M Arai, Apr. 2006, JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 128, 2, 241, 246, Scientific journal

2006, 72, 713, 194, 201

2006, 72, 719, 1835-1842 (191-198)

Ignition Position of a Diesel Spray Impinging on a Wall (Effect of Wall Angle, Injection Pressure and Fuel Quantity), Tomohiro Kawaguchi; Tsubasa Nagataki; Kenji Amagai; Tomohiko Furuhata; Masataka Arai, 2006, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 72, 717, 1378, 1383, Scientific journal

2006, 72, 724, 3121, 3127

Measurement of fuel concentration distribution in a sooting flame through Raman scattering, Hayashida, Kazuhiro;Amagai, Kenji;Satoh, Keiji;Arai, Masataka, 2006, JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING, 49, 2, 512, 519

Primary and aggregate size distributions of PM in tail pipe emissions form diesel engines, M Arai; K Amagai; T Nakaji; S Hayashi, Nov. 2005, JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING, 48, 4, 639, 647, Scientific journal

Improvement of fuel economy of an indirect injection (IDI) diesel engine with two-stage injection, K Iwazaki; K Amagai; M Arai, Feb. 2005, ENERGY, 30, 2-4, 447, 459, Scientific journal

LIF thermometry in sooty flames using NO D-2 Sigma(+) <- X-2 Pi(0,1) and OH A(2)Sigma(+) <- X-2 Pi(3,0) bands, K Hayashida; K Amagai; M Arai, Feb. 2005, ENERGY, 30, 2-4, 497, 508, Scientific journal

2005, 36巻, 1号, 199, 204

Ignition positions of a diesel spray impinging on an inclined wall, Masataka Arai; Kenji Amagai; Tsubasa Nagataki; Hideki Okita, 2005, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 71, 702, 737, 743, Scientific journal

Measurement of fuel concentration distribution in a sooting flame through Raman scattering, Kazuhiro Hayashida; Kenji Amagai; Keiji Satoh; Masataka Arai, 2005, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 71, 705, 1445, 1452, Scientific journal

Rotational temperature measurement of NO in a sooting diffusion flame through laser-induced fluorescence spectrum, Kazuhiro Hayashida; Kenji Amagai; Hiroyuki Shirai; Masataka Arai, 2004, Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 70, 695, 1834, 1841, Scientific journal

Laser measurement of Polycyclic Aromatic Hydrocarbons (PAHs) in a flame (2nd report, presumption of PAHs by laser-induced fluorescence spectrum), Keiji Satoh; Kazuhiro Hayashida; Taku Miyakawa; Kenji Amagai; Masataka Arai, 2004, Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 70, 696, 2183, 2190, Scientific journal

火炎中に生成される多環芳香族炭化水素のレーザ計測 （第１報，時間分解計測によるレーザ誘起蛍光と赤熱発光の分離）, SATOH Keiji; HAYASHIDA Kazuhiro; AMAGAI Kenji; ARAI Masataka, 2004, Transactions of the Japan Society of Mechanical Engineers Series B, 70, 692, 1051, 1057, Scientific journal

2003, Vol.34, No.2, 39, 44

Burnt gas characteristics in catalytic combustion of methane/air mixture, Kazuhiro Hayashida; Kenji Amagai; Masataka Arai, 2003, Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy, 82, 2, 91, 96, Scientific journal

Characteristics of interimpingement diesel spray, T Chiba; M Saito; K Amagai; M Arai, Jul. 2002, ATOMIZATION AND SPRAYS, 12, 4, 431, 449, Scientific journal

Rotational temperature measurement of NO molecule in a flame through laser-induced fluorescence spectrum, K Hayashida; H Shirai; K Amagai; M Arai, Feb. 2002, JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING, 45, 1, 201, 208, Scientific journal

Effect of fuel cetane number on ignition characteristics of a diesel spray, Masafumi Kouno; Kenji Amagai; Masataka Arai, 2002, Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 68, 665, 276, 283, Scientific journal

NO concentration measurement in burnt gas from catalytic combustion by laser-induced fluorescence, Kazuhiro Hayashida; Kenji Amagai; Masataka Arai, 2002, Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 68, 674, 2914, 2919, Scientific journal

2002, 16巻, 4号, 380, 389

Combustion characteristics of waste material containing high moisture, M Saito; K Amagai; G Ogiwara; M Arai, Jul. 2001, FUEL, 80, 9, 1201, 1209, Scientific journal

Catalytic combustion of pre-vaporized liquid fuel, M Arai; K Amagai; T Mogi, Mar. 2001, JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME, 123, 1, 44, 49, Scientific journal

Combustion characteristics of watery materials, Masahiro Saito; Kenji Amagai; Goro Ogiwara; Masataka Arai, 2001, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 67, 658, 1536, 1543, Scientific journal

2001, 32(3),pp.57-62

Analysis of spray flame structure in a hot air stream by exciplex fluorescence method, Naoki Sakashita; Kenji Amagai; Masataka Arai, 2001, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 67, 662, 2590, 2595, Scientific journal

2001, 67巻, 662号, 2596, 2603

Frequency analysis on the flickering behavior of jet diffusion flame under variable gravity fields, Hiroyuki Sato; Kenji Amagai; Masataka Arai, 2001, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 67, 663, 2820, 2827, Scientific journal

Diffusion flames and their flickering motions related with Froude numbers under various gravity levels, H Sato; K Amagai; M Arai, Oct. 2000, COMBUSTION AND FLAME, 123, 1-2, 107, 118, Scientific journal

2000, 9, 25, 234, 240

2000, 14, 3, 310, 319

2000, 9, 25, 227, 233

Rotational temperature measurement of no molecule in a flame through laser induced fluorescence spectrum, Kazuhiro Hayashida; Hiroyuki Shirai; Kenji Amagai; Masataka Arai, 2000, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 66, 651, 3013, 3020, Scientific journal

2000, 9(26),pp.10-17

Surface wave transition before breakup on a laminar liquid jet, M Arai; K Amagai, Oct. 1999, INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 20, 5, 507, 512, Scientific journal

Ignition and combustion characteristics of two-stage injection diesel spray, K Amagai, Jul. 1999, JSAE Review, 20, 3, 407, 411, Scientific journal

Gravity effects on stability and flickering motion of diffusion flames, M Arai; H Sato; K Amagai, Jul. 1999, COMBUSTION AND FLAME, 118, 1-2, 293, 300, Scientific journal

1999, 65, 630, 698, 705

1999, 65, 633, 1786, 1792

1999, 65, 633, 1793, 1799

1999, 65, 631, 920, 927

1999, 44, 2, 435, 142

1999, 13, 2, 109, 116

Structure of spbray flames in a hot air stream, Kazuyuki Hasegawa; Toshio Mogi; Kenji Amagai; Masataka Arai, 1999, Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 65, 639, 3831, 3837, Scientific journal

1998, 64, 628, 4279, 4284

1998, 64, 622, 1925, 1931

1998, 64, 626, 3503, 3509

Disintegration of liquid jets from a coaxial dual nozzle .1. Observation of breakup phenomena, M Arai; K Amagai; SY No, Sep. 1997, ATOMIZATION AND SPRAYS, 7, 5, 507, 517, Scientific journal

Disintegration of liquid jets from a coaxial dual nozzle .2. Surface wave and its frequency analysis, K Amagai; M Arai; SY No, Sep. 1997, ATOMIZATION AND SPRAYS, 7, 5, 519, 530, Scientific journal

1997, 76, 1, 37, 46

1997, 6, 14, 29, 35

1997, 14, 1, 13, 9

1997, 6, 13, 2, 28

Image analysis of a diesel spray impinging on a wall, T. Ebara; K. Amagai; M. Arai, 1997, International Journal of Fluid Mechanics Research, 24, 1-3, 261, 272, Scientific journal

Internal flow analysis of a diesel spray using two stage injection system, M. Arai; K. Amagai, 1997, International Journal of Fluid Mechanics Research, 24, 1-3, 54, 64, Scientific journal

1996, 5-4, 12, 178, 184

1996, 5-3, 11, 116, 124

1996, 5-1, 9, 19, 25

1996, 5-1, 9, 12, 1218

1996, 62, 594, 820, 826

1996, 62, 595, 1268, 1272

1996, 62, 595, 1223, 1259

Study on a Separation Technique for Plastic-Metal Wastes by the Molten Salt (I) — Observation of Separation Process —, Kenji Amagai; Masataka Arai, 1995, Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy, 74, 11, 962, 969, Scientific journal

1995, 101, 27, 35

Prototype Pump Driven by Air Actuator for High-Temperature Molten Material, Hashimoto Hiroyuki; Watanabe Hideo; Ihara Akio; Moriyama Takayuki; Hiyama Hirokuni; Amagai Kenji, Nov. 1994, Transactions of the Japan Society of Mechanical Engineers. Series B., 60, 579, p3908, 3913

1994, 60, 572, 1343, 1348

1994, 3-1, 5, 33, 3342

1993, 10, 4, 259, 266

1993, 59, 568, 4052, 4058

A Theoretical Model of Multiphase Flow with Solidified Particles : Physical Signification of Constitutive Equations and Evaluation of Latent Heat Effect, AMAGAI Kenji; HASHIMOTO Hiroyuki, Jan. 1992, Transactions of the Japan Society of Mechanical Engineers. Series B., 58, 545, p31, 37

A Theoretical Model of Multiphase Flow with Solidified Particles : Conservation Equations and Hydrodynamical Evaluation, HASHIMOTO Hiroyuki; AMAGAI Kenji, Nov. 1991, Transactions of the Japan Society of Mechanical Engineers. Series B., 57, 543, p3666, 3673

1988, 3, 1-4, 305, 314

A NOTE ON MODULATED WAVY DISTURBANCES TO CIRCULAR COUETTE-FLOW, M OHJI; S SHIONOYA; K AMAGAI, Mar. 1986, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 55, 3, 1032, 1033

Jul. 2025, 12, 13, Others

Yes, Yes, 20 Jan. 2025, 104, 2, 110, 114, Introduction scientific journal

Jan. 2025, 169, 4, 7, Introduction other

24 Oct. 2024, 219, 4, 5, Others

Yes, Yes, Nov. 2024, 78, 11, 2, 3, Others

Yes, No, No, 20 Jan. 2023, 102, 1, 2, 22, Report scientific journal

No, No, No, 01 Nov. 2022, 75, 11, 68, 74, Introduction scientific journal

Yes, No, Yes, 2021, 13, 10, 20, Introduction other

Nov. 2020, 29, 98, 80, 83, Introduction scientific journal

Apr. 2020, 74, 4, 95, 99

2020, 69, 70, Technical report

2019, 89, 90

2019, 95, 96, Technical report

2019, 93, 94, Technical report

2019, 91, 92, Technical report

Apr. 2018, 255, 58, 63, Introduction other

2018, 83, 84, Technical report

2018, 81, 82, Technical report

2018, 79, 80

2017, 85, 86, Technical report

2017, 83, 84, Technical report

2017, 81, 82, Technical report

2017, 41, 1-2., Introduction scientific journal

2016, 67, 68, Technical report

2016, 95, 11, 980, 986

2015, 107, 108, Technical report

2013, 67, 3, 55

2012, 47, 8, 259

2011, 233, 1, 2, Introduction other

2011, 20, 71, 144

2011, 20, 70, 43, 44

2009, 54, 2, 111, 116

2009, 20, 10, 41, 45

Dec. 2007, 16, 56, 93, 94, Introduction scientific journal

2007, Vol.9, No.2, 28, 32

2006, Vol.41, No.3, 65, 70

2006, Vol.40,No.6,p.1

2006, Vol.41, No.3, p.42

2006, 15, 51, 85, 86

2005, 27, 12, (19-22),689-692

2005, 59, 4, 44, 47

2003, 8, Introduction other

2001, 55, 3, 52, 57

1999, 21-12 674-680

1999, 8, 24, 220, 221

1996, 5-3 No.11 133-144

Yes, Yes, 20 Jan. 2025, 104, 2, 120, 122, Introduction scientific journal

Contributor, 29 Sep. 2023, 630, pp.546-556, General book, 978-4-86104-982-8

Contributor, 01 Oct. 2022, 564, 326-327, 978-4-254-25273-6 C3558

Contributor, 15 May 2021, 204, p.56-66, p177-179, General book, ISBN-10:4761527714, ISBN-13:978-4761527716

2011

2010

2009, 9784627630116

2006, 4880589667

2005

2004, 4915219399

2002

2001

1993

06 Jul. 2026, 06 Jul. 2026, 06 Jul. 2026, Japanese, Japan

Influence on Testing by Visualization Apparatus of Corrosion Process When Two Specimens are Installed in Parallel, Yuya Ishida, Mayuko Yamada, Atsushi Nozaka, Norikazu Sakuma, Madoka Murai, Akiyoshi Onozawa, Kenji Amagai, The 12th IIAE International Conference on Intelligent Systems and Image Processing 2025, Sep. 2025, 08 Sep. 2025, Japan, Nagasaki pref., Japan

May 2025, Japan

22 Sep. 2025, 22 Sep. 2025, 22 Sep. 2025, Japanese, Japan, Domestic conference

09 Oct. 2025, 09 Oct. 2025, 12 Oct. 2025, Japanese, Japan

13 Mar. 2026, 13 Mar. 2026, 13 Mar. 2026, Japanese, Japan

17 Jun. 2025, 17 Jun. 2025, 17 Jun. 2025, Japanese, Japan

29 Aug. 2025, 29 Aug. 2025, 29 Aug. 2025, Japanese, Japan

27 Sep. 2025, 27 Sep. 2025, 27 Sep. 2025, Japanese, Japan

17 Oct. 2023, Japan, Domestic conference

04 Sep. 2024, 04 Sep. 2024, 04 Sep. 2024, Japan

10 Nov. 2024, 10 Nov. 2024, 10 Nov. 2024, Japanese, Japan

09 Nov. 2024, 09 Nov. 2024, 09 Nov. 2024, Japanese, Japan

07 Mar. 2025, 07 Mar. 2025, 07 Mar. 2025, Japanese

29 Nov. 2024, 29 Nov. 2024, 29 Nov. 2024, Japanese, Japan

Development and social implementation of a low-speed electric bus for the revitalization of local community, Kenji Amagai, Hiroto Kotake, 5th Asia Pacific Conference on Industrial Engineering and Operations Management, English, Tokyo, Japan, International conference

11 Nov. 2023, 10 Nov. 2023, 12 Nov. 2023

06 Sep. 2023, 03 Sep. 2023, 06 Sep. 2023

Social implementation of a low-speed electric bus for local community revitalization by a socio-technological approach, 14th International Symposium on Green Energy (ISGE 2022-2023), 10 May 2023

Influences of surrounding temperature and humidity on the surface formation of VOC-free paint by spray gun coating, 14th International Symposium on Green Energy (ISGE 2022-2023), 10 May 2023

17 Mar. 2023

17 Mar. 2023

25 Mar. 2023, 25 Mar. 2023, 25 Mar. 2023

24 Mar. 2023, 24 Mar. 2023, 24 Mar. 2023

21 Mar. 2023, 21 Mar. 2023, 21 Mar. 2023

26 Mar. 2024, 26 Mar. 2024, 26 Mar. 2024

23 Mar. 2024, 23 Mar. 2024, 23 Mar. 2024

11 Mar. 2024, 11 Mar. 2024

02 Nov. 2023, 01 Nov. 2023, 02 Nov. 2023

29 Sep. 2023, 29 Sep. 2023

30 Mar. 2022, 30 Mar. 2022

25 Mar. 2022, 25 Mar. 2022

07 Mar. 2022, 07 Mar. 2022

06 Mar. 2022, 05 Mar. 2022, 06 Mar. 2022

27 Feb. 2022

08 Dec. 2021, 08 Dec. 2021

28 Nov. 2021, 28 Nov. 2021

19 Mar. 2021, 19 Mar. 2021

16 Mar. 2021, 16 Mar. 2021

02 Dec. 2020, 02 Dec. 2020, Japanese

Oct. 2020

X線その場観察を用いたポーラスアルミニウムの気孔追跡, 日本鋳造工学会第176回全国講演大会，誌上講演大会，講演番号 No.80，概要集pp.171-173, Oct. 2020

22 Feb. 2020

20 Oct. 2019

30 Aug. 2019, 30 Aug. 2019

Study of Cutting Speed Effects on Lubricant Oil Film Thickness Under Minimum Quantity Lubrication, Aug. 2019, 21 Aug. 2019, 22 Aug. 2019, English

05 Jun. 2019

25 May 2019

29 Jan. 2019

22 Jan. 2019

23 Nov. 2018, 23 Nov. 2018

20 Oct. 2017

2017

2017

2017

2017

2017

2017

2017

2017

2017

24 Feb. 2016

2016

Basic Study of Droplet Behaviors on the Wafers with Various Types of Film under Centrifugal Force Field, 2016 International Conference on Planerization / CMP Technology, 2016

2016

2016

2016

Observation and Modeling of Liquid Film Flow on Rotating Disk for CMP Cleaning Process, Kenji Amagai, Ken Kakegawa, Akira Fukunaga, Masayoshi Imai, Satomi Hamada, Hirokuni Hiyama, International symposium for Planarization/CMP Technology 2015, 30 Sep. 2015, Oct. 2015, English, Phenix, AZ, USA, International conference

2015

2015

2015

2015

2015

14 Mar. 2014

A Community-led Development and Implementation of "Low-speed Electric Bus" for Local Revitalization, Kenji Amagai; Takayuki Takarada; Yoichi Seki; Masato Funatsu; Shuji Matsumura; Hiroto Kotake; Hiroyuki Uesaka; Kenichi Kawamura; Kikuo Nezu; Tokushi Nakashima; Masahiro Munemura; Yasuo Kawabata; Masayuki Horio, INTERNATIONAL CONFERENCE ON APPLIED ENERGY, ICAE2014, 2014, 2014, 2014, English

2014

09 Feb. 2013

2013

2013

2012

2012

2012

2012

2012

2012

2012

2012

2012

Evaluation of Micro EV's Spreading to Local Community by Multinomial Logit Model, The Twelfth Asia Pacific Industrial Engineering and Management Systems Conference (12th APIEMS), 2011

2011

2011

2011

2011

2011

2011

2011

2011

2010

2010

2010

2010

2010

2010

2010

2009

2009

2009

2009

2009

2009

2009

Behavior of PAHs and PM in a Diffusion Flame of Diesel Fuel, Yoshihiro Kobayashi; Kenji Amagai; Tomohiko Furuhata; Masataka Arai, The Seventh International Conference on Modeling and Diagnostics for Advanced Engine Systems, 2008, 2008, 2008

2008

2007

2007

2007

2007

Formation Mechanism of Particlulate Mater in Diesel Fuel Combustion, 2006 Japan-China Seminar on Preparation and Utilization of Clean Fuels and Their Control of Combustion and Emissions, 2006

Scale Modeling on Puffing Frequencies of Pool Fires Related with Froude Number, Fifth International Symposium on Scale Modeling, ISSM-V, 2006

Laser Probe Sizing on In-flame PM and Its Precursor, 10th International Conference on Liquid Atomization and Spray systems, iclass06-196, 1-6, 2006

2006

2006

2006

2006

2006

2006

2006

PAHs measurement in a laminar diffusion flame of diesel fue1, Proceedings of 2005 JSAE Annual Congress, 2005

PM Characteristics of Liquid Fuel Pool Combustion, 6th World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics, CD-5-a-6 1-6, 2005

Spectroscopic Estimation for Molecular Size of PAH in Various Diffusion Flames, 6th world Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics, CD-6-b-4 1-7, 2005

Thermal Decomposition Characteristics of Plastics with Flame Retardant, 6th World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics, CD-5-a-8 1-7, 2005

2005

2005

2005

2005

2005

Atomization Behavior of Single Droplet Impinged on a Surface Oscilating with Ultrasonic Frequency, The 9th Annual Conference on Liquid Atomization and spray Systems, LIASS-Asia, 53-59, 2004

Behavior of Diesel Spray Impingement on an Extruded Column, The 9th Annual Conference on Liquid Atomization and Spray Systems, ILASS-Asia, 258-264, 2004

Evaporation and Fuel Vapor Distribution in a Diesel Spray Impinging on a Hot Wall, The Six International Symposium on Diagnostics and Modeling of Combustion in Internal Combustion Engine, COMODIA-2004, 561-566, 2004

2004

2004

2004

2004

Numerical analysis of the gravitational effect on the buoyancy-driven fluctuations in diffusion flames, H Sato; G Kushida; K Amagai; M Arai, PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2003, 2003, 2003, English

Spray-to-Spray Interaction After Wall Impingement (PartI, Fuel Adhering Behavior on a Flat Wall), The 8th Annual Conference on Liquid Atomization and Spray Systems, ILASS-Asia, 145-150, 2003

Spray-to-Spray Interaction after Wall Impingement (Part II, Ompingement Process on Various Uneven Walls), The 8th Annual Conference on Liquid Atomization and Spray systems, Asia, 151-156, 2003

Spray-to-spray Interaction after Wall Impingement, SAE Paper No.2003-01-1837, 2003

Stereoscopic Observation on an Ignition Position of Diesel Spray, SAE Paper No.2003-01-1837, 2003

Numerical Analysis of One-dimensional Atomization Model Described by Eulerian Type Equations, Proceedings of the 9th International Conference on Liquid Atomization and Spray Systems (ICLASS2003), 2003

Atomization behavior on the top of upward liquid jet, Proceedings of the 9th International Conference on Liquid Atomization and Spray Systems (ICLASS2003), 2003

Measurement of NO Rotation Temperature using Monochromatic Fluorescence, 19th International Colloquium on the Dynamics of Explosions and Reactive Systems, Tu-1-3-3, p.1-4, 2003

2003

2003

2003

2003

2003

2003

2003

Numerical Analysis of the Gravitational Effect on the Buoyancy-Driven Fluctuations in Diffusion Flames, SATO HIROYUKI; KUSHIDA GENNITRO; AMAGAI KENJI; ARAIMASATAKA, Proceedings of the Combustion Institute, 2002, 2002, 2002

Fundamental Behavior of Upward Liquid Jet, The 7th Annual Conference on Liquid Atomization and Spray Systems, ILASS-Asia, 36-41, 2002

Theoretical Study of One-dimensional Atomization Problem (2nd Report, Effect of Atomization Efficiency on Break-up Processes), The 7th Annual Conference on Liquid Atomization and Spray systems, ILASS-Asia, 63-69, 2002

Feasibility Study on Electromagnetic Atomization, ILASS-Korea-2002, 89-93, 2002

Rotational Temperature Measurement of NO in a Sooty Flame by Spectrum Matching Method, 29th International Symposium on Combustion, W-I-P 134, 2002

Exhaust Gas Analysis in a Catalytic Combustion System with a Methane Mixture, 2002 International Joint Power Generation Conference, IJPGC2002-26133 1-7, 2002

LIF Thermometry in a Sooty Flame, 2002 International Joint Power Generation Conference, IJPGC2002-26134 1-7, 2002

2002

2002

2002

2002

2002

2002

LIF Analysis on a Diffusion Flame, 2001 Japan-China Workshop on Combustion and Its Latest Measuring Techniques, 61-67, 2001

LIF Thermometry in Sooty Flame - An Application of Excitation-Emission-Spectrum, Proceedings of the 3rd International Symposium on Advanced Energy Combustion Systems and Related Technologies, Paper No.1C3, 2001

LIF Thermometry in Sooty Flame by Using NO D2？+？X2？(0,1) and OH A2？+？X2？(3,0) Bands, Proceedings of the 3rd International Symposium on Advanced Energy Combustion Systems and Related Technologies, Paper No.1C3, 2001

Behavior of a Post-Impingement Diesel Spray (1st Report, Characteristics of Adhered Fuel Film), ILASS-Asia 2001, 178-183, 2001

Behavior of a Post-Impingement Diesel Spray (2nd Report、Volume and Average Air/Fuel Ratio of the Spray), ILASS-Asia 2001, 184-189, 2001

Theoretical Study of One-Dimensional Atomization Problem, ILASS-Asia 2001, 140-145, 2001

Effect of Recessed-Wall on an Impingement Diesel Spray, The Fifth International symposium on Diagnositics and Modeling of Combustion in Internal Combustion engine (COMODIA-2001), 535-541, 2001

2001

2001

2001

2001

2001

2001

2001

Flickering frequencies of diffusion flames observed under various gravity fields, H Sato; K Amagai; M Arai, PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2000, 2000, 2000, English

2000, 2000, 2000

2000, 2000, 2000

2000, 2000, 2000

2000, 2000, 2000

2000, 2000, 2000

2000, 2000, 2000

2000, 2000, 2000

1999, 1999, 1999

1999, 1999, 1999

1999, 1999, 1999

1999, 1999, 1999

1999, 1999, 1999

1999, 1999, 1999

1998, 1998, 1998

1998, 1998, 1998

1998, 1998, 1998

1998, 1998, 1998

1998, 1998, 1998

1998, 1998, 1998

1998, 1998, 1998

1997, 1997, 1997

1997, 1997, 1997

1997, 1997, 1997

1997, 1997, 1997

1997, 1997, 1997

1997, 1997, 1997

1997, 1997, 1997

1997, 1997, 1997

1997, 1997, 1997

1995, 1995, 1995

1995, 1995, 1995

1994, 1994, 1994

1994, 1994, 1994

1994, 1994, 1994

1994, 1994, 1994

Apr. 1988

1986

22 Nov. 2019

09 Nov. 2024, 09 Nov. 2024, 09 Nov. 2024, Japanese, Japan

09 Nov. 2024, 09 Nov. 2024, 09 Nov. 2024, Japanese, Japan

10 Nov. 2024, 10 Nov. 2024, 10 Nov. 2024, Japanese, Japan

Patent right, 特願2018-086381, 27 Apr. 2018, 特許7039022, 11 Mar. 2022, Yes, Yes

Patent right, 特願2018-082712, 24 Apr. 2018, 特許第7025013号, 15 Feb. 2022, Yes, Yes

Patent right

Yuya ishida, Yasuhiro Shitara, Daisuke Miki, Mayuko Yamada, Madoka Murai, Norikazu Sakuma, Kenji Amagai, New Apparatus and Evaluation Method for Salt Spray Tests, The Institute of Industrial Applications Engineers, 2025, Official journal

07 Oct. 2024, Others, Japan

NextGen Transportation Systems Award, Kenji Amagai, NextGen Transportation Systems Award, 5th Asia Pacific Conference on Industrial Engineering and Operations Management, 12 Sep. 2024, International society, Japan

24 May 2022

18 Mar. 2021, Official journal, Japan

2017

2017

2001

2006

2007

2010

1997

1998

2002

2004

2003

2004

2014

2016

2015

2017

2018

2007

2011

2014, Mar. 2020, rm:misc

Jul. 2019, Jun. 2020, rm:presentations

Jul. 2016, Jun. 2017, rm:misc

Jul. 2017, Jun. 2019, rm:presentations

2016, Mar. 2019

2008, Principal investigator, Competitive research funding, rm:misc

Oct. 2008, Sep. 2014, Coinvestigator, rm:published_papers

Local co-innovation approach for against climate change, JST-RISTEX, Apr. 2014, Mar. 2017, Coinvestigator, rm:published_papers

2009, Principal investigator, rm:misc

2019, 2020, Principal investigator, rm:media_coverage

Development of Measurement Method for Free Surface Flow using Laser Tagging Method by Photochromic Dye, AMAGAI Kenji, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Gunma University, 01 Apr. 2012, 31 Mar. 2015, In this study, the laser tagging method by photochromic dye was developed for the study of free surface flow behavior. Flow characteristics of liquid sheet jet and surface flow on an inclined wall were investigated. Pulses of UV light (wavelength, λ= 355nm) by a Nd:YAG laser were used in order to form the photochromic dye traces. Liquid velocity was measured from the movement of dye traces. Moreover, by forming a set of 4-points of dye traces on the liquid sheet, normal strain, shear strain and rotational motions were estimated from change of relative positions of the dye traces. Liquid surface velocity and wave velocity for falling liquid films on inclined wall were simultaneously measured by the laser tagging method. As the result, it was confirmed that the liquid film moved in almost constant velocity before approaching the surface wave. When the wave was passing over the liquid film, the liquid film velocity rapidly increased., 24560183, kaken_url

Establishment of VOC measurement technique using laser induced fluorescence method, AMAGAI Kenji, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Gunma University, 2008, 2010, Laser induced fluorescence method was applied for the visualization of Volatile Organic Compound (VOC) gas. Fourth-harmonic generation light of ND : YAG laser was used for the excitation of the VOC gas. An image intensifier (I/I) was used for capturing the VOC fluorescence images. Diffusion characteristics of VOC from suspended droplets of xylene and toluene were investigated. Moreover, VOC images from a droplet deposited on a wall and a spray flow were visualized by this method. Measurement results were compared with the solutions of the one-dimensional diffusion equation. As the result, it was confirmed that the diffusion phenomena could be analyzed by the LIF method., 20560178, kaken_url

Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Exploratory Research, Grant-in-Aid for Exploratory Research, Gunma University, 2007, 2007, 19656046

Study on a laser probe measurement for precursors of nano-PM generated in combustion fields, AMAGAI Kenji, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Gunma University, 2006, 2007, Nano meter size particulate matter (nano-PM) and polycyclic aromatic hydrocarbons (PANS) have harmful effects for human health. Investigations of fundamental characteristic of formation behavior of PAHs in combustion process were required for the reduction of nano-PM emission. In this study, PAHs characteristics in diffusion flames of liquid and gas fuels were investigated using laser diagnostic and gas sampling methods. Methane (CH_4), propane (C_3H_8) and hexane (C_6H_<14>) were used as the test fuels. A laser induced fluorescence (LIF) method was used to obtain the spatial distributions of PAHs, which were precursor molecules of soot particles. Spatial distributions of soot were also measured by a laser induced incandescence (LII) method. A transition region from PAHS to soot was discussed from the results of LIF and LIL Further, PAH concentrations in the test flames were measured using a gas chromatography (GC). Profiles of PAHs concentrations of test flames were compared. As the results, it was found that the low carbon number fuels such as propane and methane are remained to some fuel at downstream part. And, these some fuels were changed to large PAHs at downstream part. Moreover, it was confirmed that relatively small PAHs species such as benzene and toluene existed in looting region, however, the larger PAHs such as fluorine and pyrene could not be observed in the sooting region., 18560190, rm:misc

Development of High Turbulence BGR Ultra-low NOx Combustor for Liquid Fueled Micro Gas turbine, ARAI Masataka; AMAGAI Kenji; SAITO Masahiro, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Gunma University, 2005, 2007, Micro gas turbine system is now received much attention for a local energy plant. As for the viewpoint of fuel, an energy plant using liquid fuel is desirable because of safety and smooth fuel supply even id the emergency situation such as earthquake. Also combustion emission from energy plant should be minimized for daily use of the plant. Ultra low Nox combustor with liquid kerosene fuel is developed as a micro gas turbine combustor for this purpose. The developed combustor has a unique flow system that is called upward swirl flow. This flow can form the upward reverse flow with burned gas re-circulation and is effective for flame stabilization with high turbulence. Also it is effective to attain a low Nox combustion by the effect of BGR. The main results obtained here are as follows. (1) Longer length of primary combustion zone results the undesirable combustion such as CO and Nox increases and low stability of flame. (2) The effect of vane angle of the swirl generator is not so much, however HC and CO emissions increase when the swirl generator is eliminated. (3) Air guide vane set at the bottom end of primary combustion zone shows the strong effect on the flame stabilization. For flame stabilization, enough height of vane is needed. Also an enough size of throat diameter at the outlet of primary combustion zone is needed for flame stabilization. (4) An optimization among the size of primary combustion zone, swirl generator, air guide vane and outlet throat results the enough emission performance of the combustor. Nox emission index less than 0.8 g/ (kg-fuel) and CO emission index less than 10 g/ (kg-fuel) can be attained under the primary excess air ratio of 1.5 〜 1.6, 17360091

Development of Laser Diagnostic Method for Nano-PM Precursor Formed in Flames, AMAGAI Kenji, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Gunma University, 2003, 2004, Laser induced fluorescence(LIF) method for the measurement of PAHs(Polycyclic Aromatic Hydrocarbons) in diffusion flames was developed. A KrF excimer laser and a dye-laser pumped by a XeF excimer laser were used to excite the PAHs molecules. Two-dimensional images of PAHs concentrations in the flame could be obtained by using the temporally resolved LIF method. From the data of emission spectra of PAH vapors, it was found that the peak wavelength in the emission spectrum of LIF shifted to the longer wavelength side with an increase of PAH carbon numbers. By using of this data, carbon numbers of PAH in a diffusion flame was presumed. It was confirmed that the carbon numbers of PAHs in the diffusion flame increased with approaching to the flame surface. The maximum carbon number was about 26 at the layer close to the flame surface of laminar diffusion flames., 15560169, rm:misc

Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for University and Society Collaboration, Grant-in-Aid for University and Society Collaboration, Gunma University, 2000, 2002, 12792005

Stability of Diffusion Flames in High Gravity Fields, ARAI Masataka; AMAGAI Kenji, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), GUNMA UNIVERSITY, 1995, 1996, Behavior of diffusion flame under various gravity level was experimentally investigated for better understanding of flame stability. Flame length and width were measured as the function of gravity scale. Also, how the gravity affects on the stability and blow off behavior of the flame were discussed. The gravity level was artificially controlled by using a spin tester in the gravity range from G=1 to G=15, where G=1 means the gravity on the earth. The laminar diffusion flames of methane and propane gas were made on the tip of the small vertical pipe where the vertical direction means an opposite direction of the artificial gravity. The results showed that the flame became unstable with an increase of gravity level. The flame length decreased and the blue flame length increased with an increase of gravity level for every fuel. These results are explained by the promotion of natural convection flow which was caused by an increase of buoyancy force. The flickering of flame and blow off were observed in a high gravity level. It was confirmed that the instability of a diffusion flame strongly depended on the gravity level., 07650237

Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Encouragement of Young Scientists (A), Grant-in-Aid for Encouragement of Young Scientists (A), Gunma University, 1994, 1994, 06750163

Droplet Evaporation and Heat Transfer on a Hot Surface under the Super Gravitational Fields, ARAI Masataka; AMAGAI Kenji, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (C), Grant-in-Aid for General Scientific Research (C), Gunma University, 1992, 1993, Droplet evaporation on a hot surface under super-gravitational fields was experimentally investigated. A test chamber attached to the end of a rotating arm was constructed to produce the quasi-super-gravitational fields. A hot surface, droplet-forming equipment and a video camera for measuring the lifetime of a droplet were installed in a test chamber. Lifetime curves of water, n-decane and benzene were measured under the gravity of G = 1 to 12. As a result, it was found that an ncrease of the gravitational acceleration led to the decrease of lifetime near the Leidenfrost point., 04805020

Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Encouragement of Young Scientists (Research Fellowship), Grant-in-Aid for Encouragement of Young Scientists (Research Fellowship), Tohoku University, 1990, 1990, 02952136