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Numerical Analysis of Boiling Bubble Growth under Electric Fields

Research Project

Project/Area Number 06650256
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Thermal engineering
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

TAKATA Yasuyuki  Kyushu University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (70171444)

Co-Investigator(Kenkyū-buntansha) TANAKA Katsunori  Kyushu University, Faculty of Engineering, Research Associate, 工学部, 助手 (40037833)
ITO Takehiro  Kyushu University, Faculty of Engineering, Professor, 工学部, 教授 (20037740)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsElectric Field / Volume of Fluid (VOF) / Boiling Bubble / Heat Transfer Enhancement / Surface Tension
Research Abstract

Numerical analysis has been performed to disclose the mechanisim of heat transfer enhancement by EHD (Electro-Hydro-Dynamic) effects. The simulation code has been developed in the following three stages ; (A) the case without electric field and phase change, (B) the case with electric field and without phase change, and (C) the case with electric field and phase change. First, to check the program in stage (B), elongation of R113 bubble under uniform electric fields was simulated and confirmed by comparing the results with the experiment reported by Garton et al.
The second, bubble diparture under non-uniform electric fields were simulated. An R113 bubble initially at a diameter of 0.2mm with a contact angle of 15゚ are placed on the lower disc electrode of 0.4mm in diameter. Upper disc electrode has 1mm in diameter and the distance between two electrodes is 1mm. The voltage applied to the electrodes are 5,10 and 20kV.The bubble was deformed and separated from the lower electrode in each applied voltage. It was found by the rough estimation in case of 5kV that the electrostatic force is 100 times as much as the gravity force. This results gives us a qualitative explanation why fine boiling bubbles are created under non-uniform fields.
To check the program in final stage (C), behavior of helium bubble on a heated plate was simulated. Calculation conditions tested are iniial bubble diameter of 20mum, surface super heat of 0.1K and atmospheric pressure. The bubble departure diameter obtained is 55mum which qualitatively agrees with a reported experimantal result. When we applied non-uniform electric field on the helium bubble, the bubble behavior was almost the same as the results in R113 bubble.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 伊藤猛宏,高田保之,白川英観,黒木虎人: "電場における気泡成長の数値解析" 第31回日本伝熱シンポジウム講演論文集. 784-786 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 高田保之,白川英観,伊藤猛宏,黒木虎人: "VOF法の改良(ドナー・アクセプタ法および表面張力項の計算法の改良)" 日本機械学会第7回計算力学講演会講演論文集. 230-231 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 伊藤猛宏,高田保之,田中克典,白川英観,片山昌宏: "電場における伝熱促進(不平等電界による対流促進,沸騰抑制)" 日本機械学会熱工学部門講演会講演論文集. 119-121 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 高田保之,白川英観,佐々木寛,黒木虎人,伊藤猛宏: "VOF法による相変化を伴う熱流動の数値解法" 第32回日本伝熱シンポジウム講演論文集. 499-500 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Takata, H.Shirakawa, K.Tanaka, T.Kuroki and T.Ito: "Numerical Analysis of a Bubble Growth under the Electric Field" Numerical Methods in Thermal Problems. Vol.IX, Part 2. 1195-1206 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 高田保之,白川英観,佐々木寛,伊藤猛宏,黒木虎人: "VOF法による沸騰気泡の成長・離脱の数値解析" 日本機械学会第8回計算力学講演会講演論文集. 191-192 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Ito, Y.Takata, H.Shirakawa and T.Kuroki: ""Numerical Analysis of a Bubble Growth under the Electric Field"" Proc.31th National Heat Transfer Symposium of Japan. 784-786 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Takata, H.Shirakawa, T.Kuroki and T.Ito: ""Improvement of Donor-Acceptor Mthod and the Calculation of Surface Tension Term in VOF (Volume of Fluid) Method"" Proc.JSME : 7th Computational Mechanics Conference. 230-231 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Ito, Y.Takata, K.Tanaka, H.Shirakawa and M.Katayama: ""Heat Transfer Enhancement by Electric Field : Augumentation of Free Convection and Suppression of Nucleate Boiling by Nonuniform Electric Field"" Proc.JSME : Thermal Engineering Conference '94. 119-121 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Takata, H.Shirakawa, H.Sasaki, T.Kuroki and T.Ito: ""Numerical Solution of Phase Change by VOF Method"" Proc.32nd National Heat Transfer Symposium of Japan. 499-500 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Takata, H.Shirakawa, T.Tanaka, T.Kuroki and T.Ito: ""Numerical Analysis of a Bubble Growth under the Electric Field"" Numerical Methods in Thermal Problems. Vol.IX,part 2. 1195-1206 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Takata, H.Shirakawa, H.Sasaki, T.Kuroki and T.Ito: ""Numerical Analysis of a Boiling Bubble by VOF Method"" Proc.JSME : 8th Computational Mechanics Conference. 191-192 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 伊藤猛宏,高田保之,白川英観,黒木虎人: "電場における気泡成長の数値解析" 第31回日本伝熱シンポジウム講演論文集. 784-786 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 高田保之,白川英観,伊藤猛宏,黒木虎人: "VOF法の改良(ドナー・アクセプタ法および表面張力項の計算法の改良)" 日本機械学会第7回計算力学講演会講演論文集. 230-231 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 伊藤猛宏,高田保之,田中克典,白川英観,片山昌弘: "電場における伝熱促進(不平等電界による対流促進,沸騰抑制)" 日本機械学会熱工学部門講演会講演論文集. 119-121 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 高田保之,白川英観,佐々木寛,黒木虎人,伊藤猛宏: "VOF法による相変化を伴う熱流動の数値解法" 第31回日本伝熱シンポジウム講演論文集. 499-500 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Takata, H.Shirakawa, K.Tanaka, T.Kuroki and T.Ito: "Numerical Analysis of a Bubble Growth under the Electric Field" Numerical Methods in Thermal Problems. Vol.IX, Part 2. 1195-1206 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 高田保之,白川英観,佐々木寛,伊藤猛宏,黒木虎人: "VOF法による沸騰気泡の成長・離脱の数値解析" 日本機械学会第8回計算力学講演会講演論文集. 191-192 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 伊藤猛宏,高田保之,白川英観,黒木虎人: "電場における気泡成長の数値解析" 第31回日本伝熱シンポジウム講演論文集. 784-786 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 高田保之,白川英観,伊藤猛宏,黒木虎人: "VOF法の改良(ドナー・アクセプタ法および表面張力項の計算法の改良)" 日本機械学会第7回計算力学講演会講演論文集. 230-231 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 伊藤猛宏,高田保之,田中克典,白川英観,黒木虎人: "電場にける伝熱促進(不平等電界による対流促進,沸騰抑制)" 日本機械学会熱工学部門講演会講演論文集. 119-121 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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