Fundamental study on the innovative film cooling technologies to suppress the mixing process with adding swirling motion to the coolant

2013 Fiscal Year Final Research Report

• Project/Area Number: 23560229
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Osaka University
• Principal Investigator: TAKEISHI Kenichiro 大阪大学, 基礎工学研究科, 招へい教授 (70379113)
• Co-Investigator(Kenkyū-buntansha): KOMIYAMA Masaharu 大阪大学, 大学院工学研究科, 准教授 (40178372)
• Co-Investigator(Renkei-kenkyūsha): ODA Yutaka 大阪大学, 大学院工学研究科, 講師 (50403150)
• Project Period (FY): 2011 – 2013
• Keywords: 物質伝達 / 熱伝達 / フィルム冷却 / 旋回流 / 感圧塗料 / レーザ誘起蛍光法 / PIV / ガスタービン

Research Abstract

This study has been conducted to investigate a new film cooling method that utilizes swirling coolant flow through circular and shaped film cooling holes. The mixing phenomena with a film cooling air and a mainstream was measured by a instantaneous and simultaneous LIF and PIV methods, and the film cooling effectiveness on the wall was measured by PSP.
It appeared from the results that, in the case of a circular film-cooling hole, the penetration of the coolant jet into the mainstream was suppressed by the strong swirling motion of the coolant and attained 100% heigher film cooling effectiveness. As a result, the film cooling effectiveness on the wall maintained a higher value behind the cooling hole over a long range. Additionally, the kidney vortex structure disappeared. For the shaped film cooling hole, the coolant jet spreads wider in the span-wise direction. Thus, the pitch-averaged film cooling effectiveness downstream was 50% higher than that in the non-swirling case.

Research Products

• [Journal Article] Aerothermal Investigations on Mixing Flow Field of Film Cooling with Swirling Coolant Flow (2014)
  • Author(s): Takeishi, K., Komiyama, M., Oda, Y., Egawa, Y. and Kitamura, T.
  • Journal Title: Trans. of ASME J. of Turbomachinery Volume: 136, 051001 Pages: 1-9
  • Peer Reviewed
• [Presentation] A Review of Turbine Film Cooling (2014)
  • Author(s): Takeishi, K.
  • Organizer: 15^<th> International Symposium on Transport Phenomena and Dynamics of Rotating Machinery
  • Place of Presentation: Honolulu, USA(Keynote Speech)
  • Year and Date: 20140000
• [Presentation] 旋回を付加したフィルム冷却に関するLES解析 (2014)
  • Author(s): 小田豊,武石賢一郎,大塩哲哉
  • Organizer: 第51回日本伝熱シンポジウム
  • Year and Date: 20140000
• [Presentation] 旋回を伴うフィルム冷却のタービン翼端壁部冷却への適用について (2012)
  • Author(s): 武石賢一郎,小田豊,近藤慎平
  • Organizer: 日本機械学会熱工学コンファレンス2012
  • Year and Date: 20120000
• [Presentation] An Experimental Study on a Film Cooling with Swirling Coolant Flow on the Endwall of a High Loaded First Nozzle (2012)
  • Author(s): Kondo, S., Takeishi, K., Oda, Y., and Schappals, M.
  • Organizer: The Eighth KSME-JSME Thermal and Fluids Engineering Conference
  • Place of Presentation: Incheon, Korea
  • Year and Date: 20120000
• [Presentation] Progress of the film cooling for ultra-high temperature gas turbines (2012)
  • Author(s): Takeishi, K.
  • Organizer: 5th International Symposium on Fluid Machinery and Fluids Engineering
  • Place of Presentation: Jeju, Korea(Keynote Speech)
  • Year and Date: 20120000
• [Presentation] Large Eddy Simulation of Film Cooling with Swirling Coolant Air (2012)
  • Author(s): Oda, Y., Takeishi, K. And Oshio, T.
  • Organizer: 23rd International Symposium on Transport Phenomena
  • Place of Presentation: Auckland, New Zealand
  • Year and Date: 20120000
• [Presentation] フィルム冷却流れのPIV・LIF同時計測によるメカニズム解明 (2011)
  • Author(s): 長尾哲史,武石賢一郎,小宮山正治,梶内丈史
  • Organizer: 第39回可視化情報シンポジウム
  • Year and Date: 20110000
• [Presentation] 翼内部の交差噴流冷却により生成する旋回を伴うフィルム冷却 (2011)
  • Author(s): 武石賢一郎,小田豊,永川悠太
  • Organizer: 日本機械学会熱工学コンファレンス2011講演論文集
  • Year and Date: 20110000
• [Presentation] Large Eddy Simulation of Film Cooling with Swirling Coolant Flow (2011)
  • Author(s): Oda, Y., Takeishi, K., Shimizu, D., and Egawa, Y.
  • Organizer: 8th ASME-JSME Thermal Engineering Joint Conference
  • Place of Presentation: Honolulu, USA
  • Year and Date: 20110000
• [Presentation] Aerothermal Investigations on Mixing Flow Field of Film Cooling with Swirling Coolant Flow (2011)
  • Author(s): Takeishi, K., Komiyama, M., Oda, Y., Egawa, Y., and Kitamura, T.
  • Organizer: ASME Turbo Expo 2011
  • Place of Presentation: Vancouver, Canada
  • Year and Date: 20110000
• [Presentation] Film Cooling with Swirling Coolant Flow Controlled by Impingement Cooling in a Closed Cavity (2011)
  • Author(s): Takeishi, K., Oda, Y., Egawa, Y., and Hada, S.
  • Organizer: International Conference on Power Engineering-2011 (ICOPE-11)
  • Place of Presentation: Denver, USA
  • Year and Date: 20110000
• [Presentation] 旋回流を伴うシェイプトフィルム冷却に関する研究 (2010)
  • Author(s): 近藤慎平,武石賢一郎,永川悠太,北村剛
  • Organizer: 第47回日本伝熱シンポジウム
  • Year and Date: 20100000
• [Presentation] Film Cooling with Swirling Coolant Flow (2010)
  • Author(s): Takeishi, K., Oda, Y., Egawa, Y., and Kitamura T.
  • Organizer: Advanced Computational Methods and Experiments in Heat Transfer XI
  • Place of Presentation: Tallinn, Estonia
  • Year and Date: 20100000
• [Presentation] 冷却空気に旋回を付加したフィルム冷却の数値シミュレーション (2010)
  • Author(s): 清水大,武石賢一郎,小田豊,永川悠太
  • Organizer: 日本流体力学会年会2010
  • Year and Date: 20100000
• [Presentation] Numerical Simulation of Film Cooling with Swirling Coolant Air (2010)
  • Author(s): Shimizu, D., Takeishi, K., Oda, Y., and Egawa, Y.
  • Organizer: 21th International Symposium on Transport Phenomena
  • Place of Presentation: Kaohsiung, Taiwan
  • Year and Date: 20100000