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Okita Takafumi
沖田　隆文
Okita Takafumi
沖田　隆文
Institutional repository
Graduate School of Engineering　Division of Sustainable Energy and Environmental Engineering, Assistant Professor
Institutional repository

Research History 1

  1. 2015/10/01 - Present
    Osaka University Graduate School of Engineering Division of Sustainable Energy and Environmental Engineering　Assistant Professor

Professional Memberships 1

  1. 日本原子力学会

Papers 27

  1. Evaluation of influence of wall roughness on wall turbulence using LES simulation with MSGD model for liquid Li flow inside two-staged contraction nozzle

    Eiji Hoashi, Shunya Yamada, Takafumi Okita

    Journal of Nuclear Science and Technology　p. 1-10　2024/05/13　Research paper (scientific journal)

    Publisher: Informa UK Limited

  2. Investigation of hydrodynamic characteristics of Li jet flowing along concave flow channel using LES for A-FNS

    Eiji Hoashi, Daichi Hagari, Yosuke Ogino, Takafumi Okita, Makoto Oyaizu, Kentaro Ochiai

    Fusion Engineering and Design　Vol. 202　p. 114361-114361　2024/05　Research paper (scientific journal)

    Publisher: Elsevier BV

  3. Investigation of applicability of long-distance LP system for Li target diagnostics in Fusion Neutron Source

    Takafumi Okita, Shori Okunaka, Taiki Kojima, Eiji Hoashi, Makoto Oyaizu, Kentaro Ochiai

    Fusion Engineering and Design　Vol. 202　p. 114326-114326　2024/05　Research paper (scientific journal)

    Publisher: Elsevier BV

  4. Fundamental design activity of fast reactor with inherent safety characteristics for effective transmutation of minor actinide

    OKITA Takafumi, TAKEDA Satoshi, HOASHI Eiji, KITADA Takanori

    Mechanical Engineering Journal　Vol. 11　No. 2　2024/04　Research paper (scientific journal)

    Publisher: The Japan Society of Mechanical Engineers

  5. Design range of Fast Reactor with Inherent Safety for Effective Transmutation of Minor Actinide: 1. Screening with constraint of negative void reactivity

    Yusei Shimamoto, Eiji Hoashi, Takanori Kitada, Satoshi Takeda, Takafumi Okita

    International Conference on Nuclear Engineering, Proceedings, ICONE　Vol. 2023-May　2023　Research paper (international conference proceedings)

  6. DESIGN RANGE OF FAST REACTOR WITH INHERENT SAFETY FOR EFFECTIVE TRANSMUTATION OF MINOR ACTINIDE: 2.VERIFICATION OF HEAT REMOVAL VIA NATURAL CONVECTION IN CORE SECTION

    Takafumi Okita, Takanori Kitada, Eiji Hoashi, Yusei Shimamoto, Satoshi Takeda

    International Conference on Nuclear Engineering, Proceedings, ICONE　Vol. 2023-May　2023　Research paper (international conference proceedings)

  7. Thickness-variation measurement at downstream regions for Li target of fusion neutron sources

    Takafumi Okita, Kotaro Watanabe, Eiji Hoashi, Makoto M. Nakamura, Kentaro Ochiai, Atsushi Kasugai

    Fusion Engineering and Design　Vol. 179　p. 113100-113100　2022/06　Research paper (scientific journal)

    Publisher: Elsevier BV

  8. Study on melting behavior of tungsten under high heat load including verification of simulation code using other metals

    Kohei Hamaguchi, Hibiki Matsumoto, Takuma Sugita, Eiji Hoashi, Takafumi Okita

    Journal of Nuclear Science and Technology　Vol. 59　No. 9　p. 1127-1138　2022/02　Research paper (scientific journal)

  9. Study on turbulent heat transfer mechanism inside high-speed lithium jet irradiated by ion beam for fusion neutron sources

    Eiji Hoashi, Shoki Ko, Takafumi Okita, Makoto Oyaizu, Kentaro Ochiai

    Fusion Engineering and Design　Vol. 167　2021/06　Research paper (scientific journal)

  10. Observation of surface deformation of tungsten exposed to single pulsed high heat flux and magnetic field for divertor design

    Takafumi Okita, Yuki Matsuda, Sho Saito, Eiji Hoashi, Kenzo Ibano, Yoshio Ueda

    Fusion Engineering and Design　Vol. 171　2021/04　Research paper (scientific journal)

  11. Study on pulse shape dependence of tungsten mass erosion under disruption-like heat load

    Daichi Motoi, Kenzo Ibano, Yudai Kikuchi, Sho Saito, Takafumi Okita, Eiji Hoashi, Heun Tae Lee, Yoshio Ueda

    Fusion Engineering and Design　Vol. 165　2021/04　Research paper (scientific journal)

  12. In-situ measurement of surface modifications of tungsten exposed to pulsed high heat flux for divertor design in tokamak-type fusion nuclear reactors

    Yuki Matsuda, Shohei Yamashita, Yusei Miyamoto, Daichi Motoi, Takafumi Okita, Eiji Hoashi, Kenzo Ibano, Yoshio Ueda

    Fusion Engineering and Design　Vol. 161　2020/12　Research paper (scientific journal)

  13. Interaction between surface behavior and inner flow pattern of liquid Li jet for fusion neutron sources

    Eiji Hoashi, Yasuhiro Fujii, Shunya Yamada, Takafumi Okita, Hiroo Kondo, ChangHo Park, Makoto M. Nakamura, Kentaro Ochiai, Atsushi Kasugai

    Fusion Engineering and Design　Vol. 160　p. 111842-111842　2020/11　Research paper (scientific journal)

    Publisher: Elsevier BV

  14. Verification of accuracy of contact-probe distance meter for lithium target of fusion neutron source

    Takafumi Okita, Shota Entani, Kotaro Watanabe, Masahiro Higashi, Eiji Hoashi, Hiroo Kondo, ChangHo Park, Makoto M Nakamura, Kentaro Ochiai, Atsushi Kasugai

    Fusion Engineering and Design　Vol. 159　p. 111799-111799　2020/10　Research paper (scientific journal)

    Publisher: Elsevier BV

  15. Evaluation of Marangoni convection and free surface velocity of molten tungsten for tungsten divertor

    Kohei Hamaguchi, Eiji Hoashi, Takafumi Okita, Kenzo Ibano, Yoshio Ueda

    Fusion Engineering and Design　Vol. 140　p. 117-122　2019/03　Research paper (scientific journal)

    Publisher:

  16. Development of a simulation method for evaluating Marangoni convection with free surface for tungsten divertor

    Kohei Hamaguchi, Yu Teramoto, Eiji Hoashi, Takafumi Okita, Kenzo Ibano, Yoshio Ueda

    Fusion Engineering and Design　Vol. Volume 136, Part A　p. 270-275　2018/11　Research paper (scientific journal)

    Publisher:

  17. Study on melting and solidification behaviors of tungsten loaded by high heat flux for divertor in tokamak fusion reactor

    Eiji Hoashi, Shinpei Kuroyanagi, Takafumi Okita, Takeru Maeji, Kenzo Ibano, Yoshio Ueda

    Fusion Engineering and Design　Vol. 136　p. 350-356　2018/11　Research paper (scientific journal)

    Publisher:

  18. Study on measurement of the flow velocity of liquid lithium jet using MHD effect for IFMIF

    T. Okita, S. Matsuda, N. Yamaoka, E. Hoashi, T. Yokomine, T. Muroga

    Fusion Engineering and Design　Vol. 136　No. Part A　p. 178-182　2018/11　Research paper (scientific journal)

    Publisher: ELSEVIER

  19. Measurement of transient flow characteristics of target flow in water experiment for IFMIF

    Shotaro Matsuda, Takuji Kanemura, Hiroo Kondo, Sayaka Kaji, Takafumi Okita, Sachiko Yoshihashi, Eiji Hoashi, Hiroshi Horiike

    Fusion Engineering and Design　Vol. 124　p. 1096-1100　2017/11/01　Research paper (scientific journal)

    Publisher: Elsevier Ltd

  20. Study on suppression of free surface fluctuation of liquid Li jet by magnetic field

    Takafumi Okita, Junya Morioka, Eiji Hoashi, Hiroki Okuno, Hiroshi Horiike

    Fusion Engineering and Design　Vol. 124　p. 975-979　2017/11/01　Research paper (scientific journal)

    Publisher: Elsevier Ltd

  21. Laser reflection measurement on liquid lithium flow surface

    Sachiko Yoshihashi, Tsubasa Masaoka, Eiji Hoashi, Takafumi Okita, Hiroo Kondo, Takuji Kanemura, Nobuo Yamaoka, Hiroshi Horiike

    Fusion Engineering and Design　Vol. 102　p. 108-111　2016/01/01　Research paper (scientific journal)

    Publisher: Elsevier Ltd

  22. Certification of contact probe measurement of surface wave of Li jet for IFMIF

    T. Okita, E. Hoashi, S. Yoshihashi, T. Kanemura, H. Kondo, N. Yamaoka, H. Horiike

    Fusion Engineering and Design　Vol. Volumes 98-99　p. 2050-2053　2015/11　Research paper (scientific journal)

  23. Optical Property of Lithium Vapor Evaporated in Vacuum or Cover-gas area

    Journal of Radioanalytical and Nuclear Chemistry　Vol. 305　p. 953-956　2015/07　Research paper (scientific journal)

  24. Study on Formation and Development of Surface Wave of Liquid Metal Lithium Jet for IFMIF

    E. Hoashi, S. Yoshihashi-Suzuki, T. Okita, T. Kanemura, H. Kondo, N. Yamaoka, H. Horiike

    Mechanical Engineering Journal　Vol. 1　No. 4　2014/10　Research paper (scientific journal)

  25. Experimental and Numerical Study on Free Surface Flow of Liquid Metal Lithium for IFMIF

    Proceedings of NURETH-15　2013/05　Research paper (international conference proceedings)

  26. Study on free-surface flow of liquid Lithium:(3) Developing process of surface-wave using probe

    Okita Takafumi, Suzuki-Yoshihashi Sachiko, Hoashi Eiji, Kato Sho, Kanemura Takuji, kondo Hiroo, Yamaoka Nobuo, Horiike Hiroshi

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan　Vol. 2012　p. 272-272　2012

    Publisher: Atomic Energy Society of Japan

  27. Study on free-surface flow of liquid Lithium:(1) Measurement of characteristics of surface oscillation using probe

    Okita Takafumi, Suzuki Sachiko, Hoashi Eiji, Sugiura Hirokazu, Kanemura Takuji, Kondo Hiroo, Yamaoka Nobuo, Horiike Hiroshi

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan　Vol. 2011　No. 0　p. 248-248　2011

    Publisher: Atomic Energy Society of Japan

Misc. 1

  1. Study on inner flow structure of high-speed lithium jet flowing along in concave channel

    葉狩大地, 沖田隆文, 帆足英二

    日本原子力学会春の年会予稿集(CD-ROM)　Vol. 2023　2023

Presentations 34

  1. Investigation of hydrodynamic characteristics of Li jet flowing along concave flow channel using LES for A-FNS

    Eiji Hoashi, Daichi Hagari, Yosuke Ogino, Takafumi Okita, Makoto Oyaizu, Kentaro Ochiai

    15th International Symposium on Fusion Nuclear Technology (ISFNT-15)　2023/09/11

  2. Investigation of applicability of long-distance LP system for Li target diagnostics in Fusion Neutron Source

    Takafumi okita, Shori Okunaka, Taiki Kojima, Eiji Hoashi, Makoto Oyaizu, Kentaro Ochiai

    15th International Symposium on Fusion Nuclear Technology (ISFNT-15)　2023/09/14

  3. Design range of fast reactor with inherent safety for effective transmutation of minor actinide: 2.Verification of heat removal via natural convection in core section

    Takafumi Okita, Eiji Hoashi, Yusei Shimamoto, Satoshi Takeda, Takanori Kitada

    30th International Conference on Nuclear Engineering (ICONE30)

  4. Design range of fast reactor with inherent safety for effective transmutation of minor actinide: 1.Screening with constraint of negative void reactivity

    Yusei Shimamoto, Takanori Kitada, Satoshi Takeda, Takafumi Okita, Eiji Hoashi

    30th International Conference on Nuclear Engineering (ICONE30)

  5. 湾曲流路を流れる高速Li噴流の内部流動構造に関する研究

    葉狩 大地, 沖田 隆文, 帆足 英二

    日本原子力学会2023年春の年会

  6. Study on turbulent heat transfer mechanism inside high-speed lithium jet irradiated by ion beam for fusion neutron sources

    E. Hoashi, S. Ko, T. Okita, M. Oyaizu, K. Ochiai

    31st Symposium on Fusion Technology 2020 (SOFT2020)

  7. Observation of surface deformation of tungsten exposed to single pulsed high heat flux and magnetic field for divertor design

    T. Okita, Y. Matsuda, S. Saito, E. Hoashi, K. Ibano, Y. Ueda

    31st Symposium on Fusion Technology 2020 (SOFT2020)

  8. Study on pulse shape dependence of tungsten mass erosion under disruption-like heat load

    D. Motoi, K. Ibano, Y. Kikuchi, S. Saito, T. Okita, E. Hoashi, H. T. Lee, Y. Ueda

    31st Symposium on Fusion Technology 2020 (SOFT2020)

  9. In-situ measurement of surface modifications of tungsten exposed to pulsed high heat flux for divertor design in tokamak-type fusion nuclear reactors

    Y. Matsuda, S. Yamashita, Y. Miyamoto, D. Motoi, T. Okita, E. Hoashi, K. Ibano, Y. Ueda

    14th International Symposium on Fusion Nuclear Technology (ISFNT-14)

  10. Interaction between surface behavior and inner flow pattern of liquid Li jet for fusion neutron sources

    E. Hoashi, Y. Fujii, S. Yamada, T. Okita, H. Kondo, C.H. Park, M. M. Nakamura, K. Ochiai, A. Kasugai

    14th International Symposium on Fusion Nuclear Technology (ISFNT-14)

  11. Verification of accuracy of contact-probe distance meter for lithium target of fusion neutron source

    T. Okita, S. Entani, K. Watanabe, M. Higashi, E. Hoashi, H. Kondo, C.H. Park, M. M Nakamura, K. Ochiai, A. Kasugai

    14th International Symposium on Fusion Nuclear Technology (ISFNT-14)

  12. Evaluation of Marangoni convection and free surface velocity of molten tungsten for tungsten divertor

    K. Hamaguchi, E. Hoashi, T. Okita, K. Ibano, Y. Ueda

    13th International Symposium on Fusion Nuclear Technology (ISFNT-13)

  13. Study on melting and solidification behaviors of tungsten loaded by high heat flux for divertor in tokamak fusion reactor

    E. Hoashi, S. Kuroyanagi, T. Okita, T. Maeji, K. Ibano, Y. Ueda

    13th International Symposium on Fusion Nuclear Technology (ISFNT-13)

  14. Study on measurement of the flow velocity of liquid lithium jet using MHD effect for IFMIF

    T. Okita, S. Matsuda, N. Yamaoka, E. Hoashi, T. Yokomine, T. Muroga

    13th International Symposium on Fusion Nuclear Technology (ISFNT-13)

  15. 多点プローブ法を用いた液体金属Li自由表面流の表面変動計測

    沖田 隆文, 圓谷 彰太, 帆足 英二, 近藤 浩夫, 山岡 信夫, 堀池 寛

    日本原子力学会2017年秋の大会

  16. Development of a simulation method for evaluating Marangoni convection with free surface for tungsten divertor

    K. Hamaguchi, Y. Teramoto, E. Hoashi, T. Okita, K. Ibano, Y. Ueda

    Symposium on Fusion Technology 2016 (SOFT2016)

  17. Numerical study on fluid dynamics of liquid metal breeder under magnetic field

    Y. Iwama, E. Hoashi, T. Okita, N. Yamaoka, H. Horiike, T. Yokomine, T. Muroga

    Symposium on Fusion Technology 2016 (SOFT2016)

  18. Numerical study on detailed flow structure inner high-speed liquid metal lithium flow

    E. Hoashi, M. Kaginaka, T. Okita, S. Yoshihashi, H. Kondo, T. Kanemura, N. Yamaoka, H. Horiike

    Symposium on Fusion Technology 2016 (SOFT2016)

  19. Measurement of transient flow characteristics of target flow in water experiment for IFMIF

    S. Matsuda, T. Kanemura, H. Kondo, S. Kaji, T. Okita, S. Yoshihashi, E. Hoashi, H. Horiike

    Symposium on Fusion Technology 2016 (SOFT2016)

  20. Study on suppression of free surface fluctuation of liquid Li jet by magnetic field

    T. Okita, J. Morioka, E. Hoashi, H. Okuno, H. Horiike

    Symposium on Fusion Technology 2016 (SOFT2016)

  21. 磁場下液体金属増殖材の流動特性に関する研究

    岩間 悠樹, 鍵仲 将, 帆足 英二, 沖田 隆文, 山岡 信夫, 堀池 寛, 横峯 健彦, 室賀 健夫

    日本原子力学会2016年春の年会

  22. 磁場により流れが制御された液体金属Li荷電変換ストリッパーの開発

    沖田 隆文, 森岡 潤也, 帆足 英二, 奥野 広樹, 金村 卓治, 近藤 浩夫, 山岡 信夫, 堀池 寛

    日本原子力学会2016年春の年会

  23. 液体Li自由表面流に関する研究 -噴流底部境界層における渦による自由表面への影響-

    鍵仲 将, 帆足 英二, 沖田 隆文, 吉橋 幸子, 金村 卓治, 近藤 浩夫, 山岡 信夫, 堀池 寛

    日本原子力学会2015年秋の大会

  24. Numerical study on influence of boundary layer flow inner nozzle on surface characteristics of liquid metal Li jet

    E. Hoashi, M. Kaginaka, T. Okita, S. Yoshihashi, T. Kanemura, H. Kondo, N. Yamaoka, H. Horiike

    9th Korea-Japan Symposium on Nuclear Thermal Hydraulics and Safety (NTHAS9)

  25. Laser reflection measurement on liquid lithium flow surface flow

    S. Yoshihashi, T. Masaoka, E. Hoashi, T. Okita, H. Kondo, T. Kanemura, N. Yamaoka, H. Horiike

    Symposium on Fusion Technology 2014 (SOFT2014)

  26. Certification of contact probe measurement of surface wave of Li jet for IFMIF

    T. Okita, E. Hoashi, S. Yoshihashi-Suzuki, T. Kanemura, H. Kondo, N. Yamaoka, H. Horiike

    Symposium on Fusion Technology 2014 (SOFT2014)

  27. 光吸収によるリチウムの蒸気計測手法の原理実験

    橋本 大輝, 吉橋 幸子, 井澤 大介, 沖田 隆文, 帆足 英二, 山岡 信夫, 堀池 寛

    日本原子力学会2014年秋の大会

  28. ナノ秒パルスレーザーによる水中での金属掘削特性評価

    栗須 ひとみ, 吉橋 幸子, 帆足 英二, 沖田 隆文, 山岡 信夫, 堀池 寛

    日本原子力学会2014年秋の大会

  29. 液体リチウム自由表面流に関する研究 (6)噴流内部の詳細流動構造のCFDシミュレーション

    帆足 英二, 吉橋 幸子, 沖田 隆文, 金村 卓治, 近藤 浩夫, 山岡 信夫, 堀池 寛

    日本原子力学会2014年春の年会

  30. 液体リチウム自由表面流に関する研究 (5)レーザー反射による表面変動の計測

    霜上 慧, 吉橋 幸子, 帆足 英二, 正岡 翼, 沖田 隆文, 金村 卓治, 近藤 浩夫, 山岡 信夫, 堀池 寛

    日本原子力学会2014年春の年会

  31. Study on Formation and Development of Surface Wave of Liquid Metal Lithium Jet for IFMIF

    E. Hoashi, S. Yoshihashi-Suzuki, T. Okita, T. Kanemura, H. Kondo, N. Yamaoka, H. Horiike

    21th International Conference on Nuclear Engineering (ICONE21)

  32. Experimental and Numerical Study on Free Surface Flow of Liquid Metal Lithium for IFMIF

    T. Okita, E. Hoashi, S. Yoshihashi-Suzuki, T. Kanemura, H. Kondo, T. Furukawa, N. Yamaoka, H. Horiike

    15th International Topical Meeting on Nuclear Reactor Thermal-Hydraulics (NURETH-15)

  33. 液体リチウム自由表面流に関する研究(3)プローブ計測による表面波の発達過程

    沖田 隆文, 吉橋-鈴木 幸子, 帆足 英二, 加藤 翔, 金村 卓治, 近藤 浩夫, 山岡 信夫, 堀池 寛

    日本原子力学会2012年秋の大会

  34. 液体金属リチウム自由表面流に関する研究(1)プローブによる波動特性の実験研究

    沖田 隆文, 鈴木-吉橋 幸子, 帆足 英二, 杉浦 寛和, 金村 卓治, 近藤 浩夫, 山岡 信夫, 堀池 寛

    日本原子力学会2011年秋の大会

Institutional Repository 1

Content Published in the University of Osaka Institutional Repository (OUKA)

  1. 液体金属リチウム噴流の表面変動特性と制御に関する研究

    沖田 隆文