前缘突脊倾斜气膜冷却效果的实验

工程热物理学报 , 2008, 29(7): 1174-1176.

1.南京航空航天大学,能源与动力学院,江苏,南京,210016

2.南京航空航天大学,能源与动力学院,江苏,南京,210016

3.南京航空航天大学,能源与动力学院,江苏,南京,210016

4.南京航空航天大学,能源与动力学院,江苏,南京,210016

EXPERIMENTAL INVESTIGATION ON FILM COOLING EFFECTIVENESS OF THE DECLINING HOLES WITH TABS-RIDGED

为了研究前缘突脊结构对气膜冷却的影响规律,设计了3种不同堵塞比的突脊模型,研究了气膜冷却效率随吹风比、堵塞比的变化规律.研究结果表明,与典型的圆柱型气膜孔相比,前缘突脊的存在大大提高了气膜冷却效率;前缘突脊在大吹风比下的作用更加明显;研究范围内存在最佳堵塞比.

[1]	Rhee Dong Ho;Lee Youn Seok;Kim Young Bonq.Film Cooling and Thermal Field Measurements for Staggered Rows of Rectangular-shaped Film Cooling Holes[M].ASME,International Gas Turbine Institute,Turbo.Expo.(Publication)IGTI,2003:423-432.
[2]	Jia Ronqquanq;Sunden Benqt;Miron Petetre.Numerical and Experimental Study of the Slot Film Cooling Jet with Various Angles[A].,2003:845-856.
[3]	Bradbury L J;Khadem A H .The Distortion of a Jet by Tabs[J].Journal of Fluid Mechanics,1975,70(41):801-813.
[4]	Zaman K B M Q .Reduction of Jet Penetration in a Crossflow by Using Tabs[AIAA Paper 98-3276][R].,1998.
[5]	Zaman K B M Q .Effect of Oscillating Tabs on a Jet-in-Cross-Flow[AIAA Paper 2003-0632][R].,2003.
[6]	Hasan Nasir;Sumanta Acharya;Srinath Ekkad .Improved film cooling from cylindrical angled holes with triangular tabs: effect of tab orientations[J].International journal of heat and fluid flow,2003(5):657-668.

上一张下一张

计量

作者相关

文章评分