Yuki Kazuhisa 結城和久

… Alternative Names

YUKI Kazuhisa 結城和久

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Researcher Number	90302182
Other IDs
Affiliation (Current)	2025: 山陽小野田市立山口東京理科大学, 工学部, 教授
Affiliation (based on the past Project Information) *help	2025: 山陽小野田市立山口東京理科大学, 工学部, 教授 2021 – 2023: 山陽小野田市立山口東京理科大学, 工学部, 教授 2016 – 2018: 山陽小野田市立山口東京理科大学, 工学部, 教授 2015: 山口東京理科大学, 工学部, 教授 2010 – 2014: 山口東京理科大学, 工学部, 准教授 … More 2011: 山口東京理科大学, 工学部・機械工学科, 准教授 2009: Tokyo University of Science, Yamaguchi, 工学部, 講師 2007 – 2008: 東北大学, 大学院・工学研究科, 講師 2005 – 2006: Graduate School of Engineering, Lecturer, 大学院工学研究科, 講師 2004 – 2005: 東北大学, 大学院・工学研究科, 講師 2003: 東北大学, 大学院・工学研究科, 助手 1998: Department of Quantum Science and Energy Research Associate, 大学院・工学研究科, 助手 Less
Review Section/Research Field	Principal Investigator Thermal engineering / Basic Section 19020:Thermal engineering-related / Nuclear engineering Except Principal Investigator Nuclear fusion studies / Basic Section 41050:Environmental agriculture-related / Nuclear fusion studies / エネルギー学一般・原子力学
Keywords	Principal Investigator ポーラス体 / 冷却 / ポーラス / 沸騰伝熱 / 電子機器 / ヒートシンク / 高熱流束 / 熱工学 / ブリージング / 限界熱流束 … More / ユニポーラス / プール沸騰 / 流動沸騰 / インバータ / 一方向性気孔 / ポラース体 / 潜熱 / 製鉄 / 濡れ性 / ナノ粒子 / ナノスケール伝熱 / マイクロ / 電磁力 / 流体工学 / 高速炉保全技術 … More Except Principal Investigator EVAPORON / SIMPLE method / Numerical analysis / SIMPLE法 / 数値解析 / 金属多孔質体 / バットジョイント / 分割型高温超伝導マグネット / 熱伝導 / 温室効果ガス / 硝酸態窒素 / 堆肥化 / Laminated HTS Cable / Joint Resistance / High Temperature Superconductor / Butt Joint / Remountable HTS Magnet / 核融合炉 / MHD圧損低減 / 分割型第一壁 / 直接接合 / バット接合 / 分割型超伝導マグネット / 高温超電導体 / 積層高温超伝導ケーブル / 接合抵抗 / 高温超伝導体 / Metal porous media / High heat flux load / First wall / 高熱流束負荷 / 第一壁 / Multiple environment / Non-equilibrium phenomenon / Plasma gun / High load boundary / 複合境界場 / 複合環境場 / 非平衡現象 / プラズマガン / 高負荷境界 / 高温超伝導ケーブル / 素子 / 超伝導材料 Less

呼吸現象を用いた飽和プール沸騰冷却限界の解明と蒸気流制御によるCHF10MW/m^2の達成Principal Investigator
- Principal Investigator
  
  結城和久
- Project Period (FY)
  2025 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 19020:Thermal engineering-related
- Research Institution
  Tokyo University of Science, Yamaguchi
畜産系廃棄物の堆肥化におけるメタゲノムおよび熱移動解析を用いた窒素循環の解明
- Principal Investigator
  
  神名麻智
- Project Period (FY)
  2025 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 41050:Environmental agriculture-related
- Research Institution
  Tokyo University of Science, Yamaguchi
Clarification of Breathing Phenomenon and CHF enhancement of Saturated Pool BoilingPrincipal Investigator
- Principal Investigator
  
  Yuki Kazuhisa
- Project Period (FY)
  2021 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 19020:Thermal engineering-related
- Research Institution
  Tokyo University of Science, Yamaguchi
Development of Uni-directional Porous Copper Heat Sink with Energy and Carbon savingPrincipal Investigator
- Principal Investigator
  
  Yuki Kazuhisa
- Project Period (FY)
  2016 – 2018
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Thermal engineering
- Research Institution
  Tokyo University of Science, Yamaguchi
Development of functional porous heat sink toward zero energy-wastingPrincipal Investigator
- Principal Investigator
  
  Yuki Kazuhisa
- Project Period (FY)
  2013 – 2015
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Thermal engineering
- Research Institution
  Tokyo University of Science, Yamaguchi
Demonstration of super-cooling technology with nanoparticles--assembled bi-porous structure and its controlPrincipal Investigator
- Principal Investigator
  
  YUKI Kazuzhisa
- Project Period (FY)
  2011 – 2012
- Research Category
  
  Grant-in-Aid for Challenging Exploratory Research
- Research Field
  
  Thermal engineering
- Research Institution
  Tokyo University of Science, Yamaguchi
Comprehensive solution of thermal hydraulic issues in fast reactors by utilizing electromagnetic force with active flow control magnetPrincipal Investigator
- Principal Investigator
  
  YUKI Kazuhisa
- Project Period (FY)
  2009 – 2011
- Research Category
  
  Grant-in-Aid for Young Scientists (A)
- Research Field
  
  Nuclear engineering
- Research Institution
  Tokyo University of Science, Yamaguchi
Realization of remountable high temperature superconducting magnet aiming for prototype reactor
- Principal Investigator
  
  HASHIZUME Hidetoshi
- Project Period (FY)
  2006 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Nuclear fusion studies
- Research Institution
  Tohoku University
Development of integrated system of remountable superconducting magnet, first wall and liquid blanket for prototype reactor.
- Principal Investigator
  
  HIDETOSHI Hashizume
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Nuclear fusion studies
- Research Institution
  Tohoku University
Clarification and control of non-equilibrium thermal phenomenon on a high load boundary under high particle beam fluxes
- Principal Investigator
  
  TODA Saburo
- Project Period (FY)
  1996 – 1998
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  エネルギー学一般・原子力学
- Research Institution
  Tohoku University
Development of progressive high heat flux cooling device EVAPORON in a fusion reactor
- Principal Investigator
  
  TODA Saburo
- Project Period (FY)
  1996 – 1998
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Nuclear fusion studies
- Research Institution
  Tohoku university

All 2023 2022 2018 2017 2016 2015 2013 2012 2011 2010 2006 2005 Other

All Journal Article Presentation

[Journal Article] Effect of Thickness and Pore Diameter of Lotus Copper on Breathing Phenomenon for Improving Heat Transfer Performance of Saturated Pool Boiling2023
- Author(s)
  Kohei Yuki, Kazuhisa Yuki, Noriyuki Unno, Risako Kibushi, Tetsuro Ogushi, Masaaki Murakami, Tomiyuki Numata, Takuya Ide
- Journal Title
  
  Proceedings of the 17th International Heat Transfer Conference, IHTC-17
  
  Volume: N/A
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K03918
[Journal Article] Heat Transfer Enhancement in Two-phase Immersion Cooling with FC-722023
- Author(s)
  D. Tanaka , K. Yuki , N. Unno , K. Yuki , T. Ide , T. Ogushi , M. Murakami
- Journal Title
  
  Proceedings of International Conference of Electronics Packaging (ICEP2023)
  
  Volume: N/A
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K03918
[Journal Article] TWO-PHASE FLOW BOILING AND EVAPORATIVE HEAT TRANSFER PROMOTED WITH UNI-DIRECTIONAL POROUS COPPER2018
- Author(s)
  Takai Kio、Yuki K.、Yang S.、Kibushi Risako、Unno Noriyuki
- Journal Title
  
  International Heat Transfer Conference 16
  
  Volume: 1 Pages: 8143-8147
- DOI
  10.1615/ihtc16.pma.023683
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18J15537, KAKENHI-PROJECT-16K06134
[Journal Article] Heat Transfer Performance of an Energy-saving Heat Removal Device with Uni-directional Porous Copper for Divertor Cooling2018
- Author(s)
  K. Takai, K. Yuki, R. Kibushi, N. Unno, T. Tanaka
- Journal Title
  
  Fusion Engineering and Design
  
  Volume: 136 Pages: 518-521
- DOI
  10.1016/j.fusengdes.2018.03.010
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K06134
[Journal Article] Immersion Cooling of Electronics Utilizing Lotus-Type Porous Copper2016
- Author(s)
  Kazuhisa Yuki, Tomohiro Hara, Soichiro Ikezawa, Kentaro Anju, Koichi Suzuki, Tetsuro Ogushi, Takuya Ide, Masaaki Murakami
- Journal Title
  
  Transactions of The Japan Institute of Electronics Packaging
  
  Volume: 9 Issue: 0 Pages: E16-013-1-E16-013-7
- DOI
  10.5104/jiepeng.9.E16-013-1
- NAID
  130006900450
- ISSN
  1883-3365, 1884-8028
- Language
  English
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K06134
[Journal Article] Butt jointing performance for remountable HTS magnet by improving contact surface condition2006
- Author(s)
  S.Ito, H.Hashizume, K.Yuki S., S.Takami, Y.Yamamoto
- Journal Title
  
  Fusion Engineering and Design 81
  
  Pages: 1491-1496
- Data Source
  KAKENHI-PROJECT-15360487
[Journal Article] Butt jointing performance for remountable HTS magnet by improving contact surface condition2006
- Author(s)
  S.Ito, H.Hashizume, K.Yuki, S.Takami, Y.Yamamoto
- Journal Title
  
  Fusion Engineering and Design vol.81
  
  Pages: 1491-1496
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15360487
[Journal Article] Numerical analysis of MHD flow structure behind a square rod2005
- Author(s)
  M.Satake, K.Yuki, S.Chiba, H.Hashizume
- Journal Title
  
  Fusion Engineering and Design 81
  
  Pages: 525-532
- Data Source
  KAKENHI-PROJECT-15360487
[Journal Article] Boiling heat transfer enhancement with nanoparticles-assembled bi-porous structures
- Author(s)
  Kazuhisa Yuki, Tessai Sugiura, Koichi Suzuki, Gang Chen
- Journal Title
  
  2nd International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control (IWHT2013)
  
  Volume: (受理)
- Data Source
  KAKENHI-PROJECT-23656158
[Presentation] 格子状グルーブ伝熱面に接合したロータス型ポーラス銅による沸騰浸漬冷却性能の向上2023
- Author(s)
  田中大貴, 結城和久, 海野徳幸, 結城光平, 井出拓哉, 大串哲朗, 村上政明
- Organizer
  第60回日本伝熱シンポジウム
- Data Source
  KAKENHI-PROJECT-21K03918
[Presentation] ロータス型ポーラス銅を用いた沸騰浸漬冷却における限界熱流束発生メカニズムに関する検討2023
- Author(s)
  結城光平, 結城和久, 海野德幸, 木伏理沙子, 大串哲朗, 村上政明, 沼田富行, 井手拓哉
- Organizer
  第60回日本伝熱シンポジウム
- Data Source
  KAKENHI-PROJECT-21K03918
[Presentation] ブリージング現象を利用した二相浸漬冷却技術に対する溝構造の影響2022
- Author(s)
  寺田光希, 結城和久, 海野徳幸, 木伏理沙子, 尾串哲朗, 井出拓哉, 沼田富行, 村上政明
- Organizer
  日本機械学会　熱工学コンファレンス2022
- Data Source
  KAKENHI-PROJECT-21K03918
[Presentation] Heat transfer performance of a small cold plate with uni-directional porous copper for cooling power electronics2017
- Author(s)
  Kazuhisa Yuki, R. Tsuji, K. Takai, S. Aramaki, R. Kibushi, N. Unno, K. Suzuki
- Organizer
  19th International Conference on Fluid Mechanics and Thermodynamics ICFMT 2017
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K06134
[Presentation] Heat Transfer Performance of Uni-directional Porous Heat Sink for Cooling of Next Generation On-vehicle Inverter2017
- Author(s)
  KazuhisaYuki
- Organizer
  2017 International Conference on Electronics Packaging (ICEP2017)
- Place of Presentation
  Yamagata, Tendou
- Year and Date
  2017-04-19
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K06134
[Presentation] 一方向性ポーラス銅を用いた高熱流束冷却デバイスEVAPORON-4の伝熱性能2017
- Author(s)
  髙井貴生、結城和久、結城光平、木伏理沙子、海野德幸、鈴木康一
- Organizer
  第５４回日本伝熱シンポジウム
- Data Source
  KAKENHI-PROJECT-16K06134
[Presentation] 一方向性ポーラス銅を用いた小型冷却デバイスの開発2017
- Author(s)
  結城和久、辻利佳子、木伏理沙子、海野德幸
- Organizer
  第５４回日本伝熱シンポジウム
- Data Source
  KAKENHI-PROJECT-16K06134
[Presentation] PROPOSAL OF UTILIZING UNI-DIRECTIONAL POROUS COPPER FOR EXTREMELY HIGH HEAT FLUX REMOVAL2016
- Author(s)
  Kazuhisa Yuki, et al.
- Organizer
  Sixth International Conference on Porous Media and Its Applications in Science, Engineering and Industry
- Place of Presentation
  Hawaii（米国）
- Year and Date
  2016-07-04
- Data Source
  KAKENHI-PROJECT-25420170
[Presentation] 銅粒子充填層内における衝突噴流による熱伝達特2016
- Author(s)
  髙井貴生、結城和久、ほか
- Organizer
  第53回日本伝熱シンポジウム
- Place of Presentation
  大阪
- Year and Date
  2016-05-23
- Data Source
  KAKENHI-PROJECT-25420170
[Presentation] Proposal of water-cooled modules with high thermal conductivity porous media2015
- Author(s)
  Kio Takai, Kazuhisa Yuki, Akio Sagara
- Organizer
  12th International Symposium on Fusion Nuclear Technology
- Place of Presentation
  済州（韓国）
- Year and Date
  2015-09-14
- Data Source
  KAKENHI-PROJECT-25420170
[Presentation] 銅粒子ポーラス体を用いた高熱流束除去デバイスの検討2015
- Author(s)
  髙井貴生、結城和久、ほか
- Organizer
  第52回日本伝熱シンポジウム
- Place of Presentation
  福岡
- Year and Date
  2015-06-03
- Data Source
  KAKENHI-PROJECT-25420170
[Presentation] Boiling heat transfer enhancement with nanoparticles-assembled bi-porous structures2013
- Author(s)
  Kazuhisa Yuki, Tessai Sugiura, Koichi Suzuki
- Organizer
  2nd International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control (IWHT2013)
- Place of Presentation
  西安
- Data Source
  KAKENHI-PROJECT-23656158
[Presentation] 次世代高熱流束冷却技術（ナノ粒子バイポーラス構造膜による沸騰伝熱促進について）2013
- Author(s)
  結城和久、鈴木康一、杉浦鉄宰
- Organizer
  日本混相流学会年会講演会2013　第32回混相流シンポジウム
- Place of Presentation
  長野市
- Data Source
  KAKENHI-PROJECT-23656158
[Presentation] ポータブル型フローコントロールマグネットによるナトリウム高速炉の熱流動制御2012
- Author(s)
  結城和久
- Organizer
  日本原子力学会中国四国支部第5回研究発表会
- Place of Presentation
  国際学院大学袋町キャンパス
- Year and Date
  2012-09-16
- Data Source
  KAKENHI-PROJECT-21686086
[Presentation] ナノ・マイクロ酸化構造膜制御による沸騰伝熱の促進2012
- Author(s)
  杉浦鉄宰,結城和久,鈴木康一
- Organizer
  日本原子力学会中国四国支部第6回研究交流会
- Data Source
  KAKENHI-PROJECT-23656158
[Presentation] ナノ･マイクロ酸化構造膜制御による沸騰伝熱の促進2012
- Author(s)
  杉浦鉄宰、結城和久、鈴木康一
- Organizer
  日本原子力学会中国四国支部第6回研究交流会
- Place of Presentation
  広島国際学院
- Data Source
  KAKENHI-PROJECT-23656158
[Presentation] Suppression And Control Of Thermal Fatigue By An Active Flow Control Magnet ; Construction Of MHD Simulant Flow Loop Using Liquid-Gallium2012
- Author(s)
  結城和久
- Organizer
  The 14th International Topical Meeting on Nuclear Reactor Thermalhydraulics, NURETH-14
- Place of Presentation
  トロント(カナダ)(但し、私事により不参加(論文のみ受理))
- Data Source
  KAKENHI-PROJECT-21686086
[Presentation] ポータブル型フローコントロールマグネットによるナトリウム高速炉の熱流動制御2011
- Author(s)
  結城和久
- Organizer
  日本原子力学会中国四国支部第5回研究発表会
- Place of Presentation
  広島
- Data Source
  KAKENHI-PROJECT-21686086
[Presentation] Suppression And Control Of Thermal Fatigue By An Active Flow Control Magnet(AFCOM); Construction Of MHD Simulant Flow Loop Using Liquid-Gallium2011
- Author(s)
  Kazuhisa Yuki
- Organizer
  Proceedings of the 14th International Topical Meeting on Nuclear Reactor Thermalhydraulics
- Place of Presentation
  Canada
- Data Source
  KAKENHI-PROJECT-21686086
[Presentation] 電磁力を用いた高速炉熱流動問題の包括的解決;ポータブル型流動制御マグネットによる熱疲労の緩和(1)2010
- Author(s)
  結城和久, 山野秀将
- Organizer
  日本原子力学会春の大会
- Place of Presentation
  茨城
- Data Source
  KAKENHI-PROJECT-21686086
[Presentation] Comprehensive solution of thermal hydraulic issues in a sodium-cooled fast reactor by using electromagnetic force ; (1)Fabrication of liquid-Ga simulant flow loop & Suppression of thermal fatigue by a portable flow control magnet2010
- Author(s)
  結城和久
- Organizer
  18th International Conference on Nuclear Engineering(ICONE18)
- Place of Presentation
  西安(中国)
- Year and Date
  2010-05-20
- Data Source
  KAKENHI-PROJECT-21686086
[Presentation] Comprehensive solution of thermal hydraulic issues in a sodium-cooled fast reactor by using electromagnetic force : Suppression of thermal fatigue by a portable flow control magnet2010
- Author(s)
  Kazuhisa Yuki
- Organizer
  18th International Conference on Nuclear Engineering
- Place of Presentation
  China
- Data Source
  KAKENHI-PROJECT-21686086
[Presentation] 電磁力を用いた高速炉熱流動問題の包括的解決;ポータブル型流動制御マグネットによる熱疲労の緩和(1)2010
- Author(s)
  結城和久
- Organizer
  日本原子力学会春の大会
- Place of Presentation
  茨城大学
- Year and Date
  2010-03-28
- Data Source
  KAKENHI-PROJECT-21686086
[Presentation] Comprehensive solution of thermal hydraulic issues in a sodium-cooled fast reactor by using electromagnetic force ; (1) Fabrication of liquid-Ga simulant flow loop & Suppression of thermal fatigue by a portable flow control magnet2010
- Author(s)
  Kazuhisa Yuki
- Organizer
  18th International Conference on Nuclear Engineering (ICONE18)
- Place of Presentation
  西安(中国)
- Year and Date
  2010-05-20
- Data Source
  KAKENHI-PROJECT-21686086
[Presentation] Development of high heat flux removal device with metal porous media for an enlarged heat transfer surface
- Author(s)
  Kio Takai, Kosuke Shinoki, Kazuhisa Yuki, Koichi Suzuki
- Organizer
  Proceedings of the 26th international symposium on transport phenomena
- Place of Presentation
  Austria
- Year and Date
  2015-09-28 – 2015-10-03
- Data Source
  KAKENHI-PROJECT-25420170

1. HASHIZUME Hidetoshi (80198663)

# of Collaborated Projects: 4 results

# of Collaborated Products: 3 results
2. TODA Saburo (60005387)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
3. ISHII Keizo (00134065)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
4. 勝村幸博 (70241544)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
5. ITO Satoshi (60422078)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. 神名麻智 (10619365)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Yuki Kazuhisa 結城 和久

YUKI Kazuhisa 結城 和久

Research Projects

Research Products

Co-Researchers

呼吸現象を用いた飽和プール沸騰冷却限界の解明と蒸気流制御によるCHF10MW/m^2の達成Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

畜産系廃棄物の堆肥化におけるメタゲノムおよび熱移動解析を用いた窒素循環の解明

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Clarification of Breathing Phenomenon and CHF enhancement of Saturated Pool BoilingPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Development of Uni-directional Porous Copper Heat Sink with Energy and Carbon savingPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Development of functional porous heat sink toward zero energy-wastingPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Demonstration of super-cooling technology with nanoparticles--assembled bi-porous structure and its controlPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Comprehensive solution of thermal hydraulic issues in fast reactors by utilizing electromagnetic force with active flow control magnetPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Realization of remountable high temperature superconducting magnet aiming for prototype reactor

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Development of integrated system of remountable superconducting magnet, first wall and liquid blanket for prototype reactor.

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Clarification and control of non-equilibrium thermal phenomenon on a high load boundary under high particle beam fluxes

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Development of progressive high heat flux cooling device EVAPORON in a fusion reactor

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Effect of Thickness and Pore Diameter of Lotus Copper on Breathing Phenomenon for Improving Heat Transfer Performance of Saturated Pool Boiling2023

Author(s)

Journal Title

Data Source

[Journal Article] Heat Transfer Enhancement in Two-phase Immersion Cooling with FC-722023

Author(s)

Journal Title

Data Source

[Journal Article] TWO-PHASE FLOW BOILING AND EVAPORATIVE HEAT TRANSFER PROMOTED WITH UNI-DIRECTIONAL POROUS COPPER2018

Yuki Kazuhisa 結城和久

YUKI Kazuhisa 結城和久

[Presentation] 格子状グルーブ伝熱面に接合したロータス型ポーラス銅による沸騰浸漬冷却性能の向上2023