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湍流度和吹风比对叶片前缘双出口孔射流冷却效率影响 被引量:2

Influence of turbulence intensity and blowing ratios on cooling effectiveness on leading edge of blade with double-outlet hole injection
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摘要 为了探讨湍流度对一种新型气膜孔射流气膜冷却影响,利用商业软件提供的有限体积法求解N-S方程,对湍流度分别为0.4%、10%和20%时的双出口孔射流冷却效率进行数值模拟。吹风比变化范围为0.5到2.0。首先将圆柱孔射流冷却效率计算结果和实验数据进行了对比,二者吻合较好。计算得到了双出口孔射流气膜冷却下的流场、径向平均冷却效率。结果表明,湍流度和吹风比对冷却效率都有较大影响。湍流度为0.4%和10%时,最高冷却效率在吹风比1.0时获得;湍流度30%时,最高冷却效率在吹风比2.0时获得。吹风比0.5和1.0时,冷却效率随着湍流度的增加而降低;吹风比2.0时,冷却效率随着湍流度的增加而增加。 In order to investigate the influence of turbulence intensity on the film cooling performance with a novel film cooling hole injection, film cooling effectiveness with double outlet hole injection has been simulated at the turbulence intensity of 0.4%, 10% and 30% by commercial code using the finite volume method. The blowing ratios change from 0.5 to 2.0. The numerical result agrees with the experimental data in the case of the cylindrical hole injection. The flow pathlines and the film cooling effectiveness with the double outlet hole injection have been obtained. The results show that the turbulence intensity and the blowing ratios have significant inluence on the film cooling effectiveness. The optimal blowing ratio is 1.0 when the turbulence intensity is 0.4% and 10%. The optimal blowing ratio is 2.0 when the turbulence intensity is 30 %. At the blowing ratios of 0.5 and 1.0, film cooling effectiveness decreases when the turbulence intensity increases. At the blowing ratio of 2.0, film cooling effectiveness increases when the turbulence intensity increases.
出处 《空气动力学学报》 EI CSCD 北大核心 2012年第2期210-214,共5页 Acta Aerodynamica Sinica
基金 航空科学基金(2010ZB54004) 辽宁省教育厅基金(L2010425)
关键词 发动机 涡轮叶片 气膜冷却 湍流度 数值模拟 engine turbine blade film cooling turbulence intensity numerical simulation
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  • 1向安定,刘松龄,朱惠人.涡轮叶片型面气膜冷却效率的计算模型[J].推进技术,2004,25(4):303-306. 被引量:2
  • 2WADSWORTH D C,MUDAWAR I.Cooling of multichip electronic module by means of confined two-dimensional jets of liquids[J].ASME J.Heat Transfer,1990,112:891-898.
  • 3YAKHOT V,ORSZAG S A.Development of turbulence model for shear flows by a double expansion technique[ J ].Phys.Fluids A.,1992,4(7):1510-1520.
  • 4MASTERS G F.Spanwise velocity distribution in jets from rectangular slots[J].AIAA Journal,1981,19:148-152.
  • 5QUINN W R.Passive near-field mixing enhancement in rectangular jet flows[J].AIAA J.,1991,29:515-519.
  • 6SEZAI I,MOHAMAD A A.Three-dimensional simulation of laminar rectangular impinging jets,flow structure and heat transfer[J].ASME J.Heat Transfer,1999,121:50-56.
  • 7CHATTERJEE A,DEVIPRASATH L J.Heat transfer in confined laminar axisymmetric impinging jets at small nozzle-plate distances:the role of upstream vorticity diffusion[J].Numerical Heat Transfer,Part A,2001,39:777-800.
  • 8BITTLINGER G,SCHULZ A,WITTING S.Film cooling effectiveness and heat transfer coefficients for slot injection at high blowing ratios[R].ASME J GT-94-182,1994.
  • 9STURGESS G J.Design of combustor cooling slots for high film cooling effectiveness:Part 1,film general development[R].ASME 85-GT-35,1985.
  • 10STURGESS G J,PFEIFFER G D.Design of combustor cooling slots for high film cooling effectiveness:Part 2,film initial development[R].ASME 85-GT-36,1985.

共引文献43

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  • 1何立明,蒋永健,康强,朱艳.利用上游斜坡改善气膜冷却效率的数值研究[J].推进技术,2009,30(1):9-13. 被引量:9
  • 2李广超,朱惠人,樊慧明.角度和孔间距对双向扩张型孔流量系数影响的实验[J].航空动力学报,2009,24(3):499-506. 被引量:10
  • 3李广超,柏树生,吴冬,张魏.气膜孔形状对涡轮叶片气膜冷却影响的研究进展[J].热能动力工程,2010,25(6):581-585. 被引量:12
  • 4朱惠人,马兰,许都纯,屈展.孔位对涡轮叶片表面气膜冷却换热系数的影响[J].推进技术,2005,26(4):302-306. 被引量:21
  • 5GRITSCH M, SCHULZ A, WITTIG S. Adiabatic wall effec- tiveness measurements of film-cooling holes with expanded exits [J]. ASME Journal of Turbomachinery, 1998,120: 540-556.
  • 6GRITSCH M, SCHUI.Z A, WITTIG S. Discharge coefficient measurements of film-cooling holes with expanded exits [J]. ASME Journal of Turbomaehinery, 1998,120 : 557-563.
  • 7LEE K D, KIM K Y. Shape optimization of a laidback fan- shaped film-cooling hole to enhance cooling performance[R]. GT 2010-22398, 2010.
  • 8BUNKER R S, BAILEY J C. Film cooling discharge coefficient measurements in a turbulated passage with internal crossflow [J]. ASMEJournal of Turbomachinery, 2001, 123 : 774-780.
  • 9ROWBURY D A, OLDFIELD M L G, LOCK G D. Large-scale testing to validate the influence of external crossflow on the dis-charge coefficients of film cooling holes[J]. ASME Journal of Turbomachinery, 2001, 123 : 593-600.
  • 10GROTSCH M, SAUMWEBER C, SCHULZ A, et al. Effect of internal coolant crossflow orientation on the discharge coeffi- cient of shaped film-cooling holes[J]. ASME Journal of Tur- bomachinery, 2000, 122: 146-152.

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