期刊文献+

多参数影响下的气膜冷却特性及预测方法

Prediction Methods and Performance of Film Cooling Influenced by Multi-Parameters
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摘要 气膜冷却是当代燃气轮机透平中重要的冷却手段,气膜冷却设计在透平设计中非常重要,而这就要求有快速、准确的气膜冷却预测方法。综述了国内外学者对不同孔型气膜冷却多参数影响机制的研究成果,比较了针对复杂气膜冷却系统的多种预测方法。发现经验公式法传统上应用广泛,但其精度受制于公式的适用范围;基于神经网络预测气膜冷却特性具有精度高、参数适用范围广的特点,采用CFD方法预测气膜冷却特性耗时较长,精度不高。结果表明神经网络法在工业应用上前景好,CFD法则需要对各向同性的湍流模型进行修正才能有效地开展气膜冷却机理研究。 As a key cooling method for modern gas turbines,the film cooling design plays an important role in turbine design.Thus,a fast and accurate prediction method is required.A review of multi-parameters film cooling performance is given.A comparison of film cooling prediction methods is made.Empirical formula is used most widely,while it is limited in parameter range.Neural network has a good accuracy and wide valid range in film cooling prediction,and it is promising in cooling design.Isotropic turbulence model should be improved to get a better result of film cooling using CFD.
出处 《热力透平》 2012年第1期13-17,共5页 Thermal Turbine
关键词 燃气轮机 气膜冷却 多参数 经验公式 神经网络 gas turbine film cooling multi-parameters empirical formula neural network
作者简介 秦晏旻(1988-),男,浙江舟山人,清华大学热能工程系博士研究生,主要从事燃气轮机透平外部冷却方面的研究。
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参考文献19

  • 1Goldstein R J,Eckert E R,Burggraf F.Effects of Hole Geometry andDensity on Three-Dimensional Film Cooling[J].InternationalJournal of Heat and Mass Tra.
  • 2秦晏旻,李雪英,任静,蒋洪德.基于BP神经网络的多参数气膜冷却效率研究[J].工程热物理学报,2011,32(7):1127-1130. 被引量:10
  • 3Goldstein R J.Film Cooling[J].Advances in Heat Transfer,1971(7):321-379.
  • 4Baldauf S,Scheurlen M,Schulz A,et al.Correlation of FilmCooling Effectiveness From Thermographic Measurements atEngine Like Conditions[A].ASME Confere.
  • 5Bunker R S.A Review of Shaped Hole Turbine Film-Cooling Technology[J].Journal of Heat Transfer,2005,127(4):441-453.
  • 6L'Ecuyer M R,Soechting F O.A Model for Correlating Flat PlateFilm-Cooling Effectiveness for Rows of Round Holes[C].AGARD-CP-390,1985.
  • 7Sinha A K,Bogard D G,Crawford M E.Film-Cooling EffectivenessDownstream of a Single Row of Holes with Variable Density Ratio[J].Journal of Turbomachine.
  • 8Wright L M,Mcclain S T,Clemenson M D.Effect of DensityRatio on Flat Plate Film Cooling with Shaped Holes Using Psp[J].Journal of Turbomachinery,2011,1.
  • 9Mayhew J E,Baughn J W,Byerley A R.The Effect of FreestreamTurbulence On Film Cooling Adiabatic Effectiveness[J].InternationalJournal of Heat and Fluid.
  • 10Saumweber C,Schulz A,Wittig S.Free-Stream TurbulenceEffects on Film Cooling with Shaped Holes[J].Journal ofTurbomachinery,2003,125(1):65-73.

二级参考文献14

  • 1Bunker R S. Gas Turbine Handbook [M]. US: Department of Energy, 2005.
  • 2Baldauf S, Scheurlen M, Schulz A, et al. Correlation of Film Cooling Effectiveness From Thermographic Measurements at Engine Like Conditions [C]//ASME Conference Proceedings, 2002.
  • 3Colban W F, Thole K A, Bogard D. A Film-Cooling Correlation for Shaped Holes on a Flat-Plate Surface [C]//ASME Conference Proceedings, 2008.
  • 4Aleksander I, Morton H B. General Neural Unit. Retrieval Performance [J]. Electronics Letters, 1991, 27(19): 1776-1778.
  • 5Gritsch M, Schulz A, Wittig S. Adiabatic Wall Effectiveness Measurements of Film-Cooling Holes with Expanded Exits [J]. Journal of Turbomachinery, 1998, 120(3): 549- 556.
  • 6Lutum E, Johnson B V. Influence of the Hole Length-to- Diameter Ratio on Film Cooling with Cylindrical Holes [J]. Journal of Turbomachinery, 1999, 121:209-216.
  • 7Gritsch M, Colban W, Schar H, et ah Effect of Hole Geometry on the Thermal Performance of Fan-Shaped Film Cooling Holes [J]. Journal of Turbomachinery, 2005, 127(4): 718-725.
  • 8Goldstcin R J, Jin P, Olson R L. Film Cooling Effectiveness and Mass/Heat Transfer Coefficient Downstream of one Row of Discrete Holes [J]. Journal of Turbomachinery, 1999, 121(2): 225 232.
  • 9Ekkad S V, Zapata D, Hail J C. Film Effectiveness Over a Flat Surface With Air and CO2 Injection Through Compound Angle Holes Using a Transient Liquid Crystal Image Method [J]. Journal of Turbomachinery, 1997, 119(3): 587-593.
  • 10Sinha A K, Bogard D G, Crawford M E. Film-Cooling Effectiveness Downstream of a Single Row of Holes with Variable Density Ratio [J]. Journal of Turbomachinery, 1991, 113(3): 442-449.

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