针板结构冷却特性实验

张斌; 朱惠人; 蔡毅; 许都纯

针板结构冷却特性实验

西北工业大学动力与能源学院,西安 710072

基金项目: 国家重点基础研究发展计划(2007CB707701)

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出版历程
- 收稿日期: 2009-12-09
- 修回日期: 2010-05-24
- 刊出日期: 2011-02-28

Experimental investigation of cooling effectiveness of spiculate lamilloy

School of Power and Energy, Northwestern Polytechnical University,Xian 710072,China

摘要

摘要: 在已研究放大型针板内表面换热特性的基础上,在大尺寸低速回流风洞内,实验研究了5套真实尺寸针板实验件的整体冷却效果.研究结果表明:针板具有很好的冷却效果,孔间距与气膜孔径对冷却效果有很大影响,孔间距越小,气膜孔径越大冷却效果越好;扰流柱直径的变化对针板冷却效果影响较小;当吹风比一定时,主流速度的变化对针板冷却效果影响亦比较小,吹风比是影响气膜冷却效果的根本原因.
- 燃烧室 /
- 针板 /
- 扰流柱 /
- 冷却效果 /
- 吹风比
Abstract: Five true scale spiculate lamilloys were studied to analyze the cooling effectiveness based on the former inner surfaces heat transfer characteristics,and an experiment was tested in a large-scale,low-speed close-looped wind tunnel.The result shows that very high cooling effectiveness can be achieved by using spiculate lamilloy.The ratio of hole pitch to impingement hole diameter(S/D) and the diameter of film hole (D_out) play important roles in determining the cooling effectiveness,the smaller S/D or larger D_out means higher cooling effectiveness.The pin diameter (D_pin) has little influence on cooling effectiveness.When blowing ratio is constant,the gas velocity also has little influence on cooling effectiveness,while blowing ratio is a major influential factor to film cooling effectiveness.
- combustor /
- spiculate lamilloy /
- pin /
- cooling effectiveness /
- blowing ratio

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参考文献(12)

[1]	Nealy D A,Reider S B.Evaluation of laminated porous wall material for combustor liner cooling[J].Transations of the ASME,Journal of Engineering for Power,1980,102:268-276.
[2]	Funazaki K,Hachiya K.Systematic numerical studies on heat transfer and aerodynamic characteristics of impingement cooling devices combined with pins .ASME Paper GT2003-38256,2003.
[3]	Funazaki K,Tarukawa Y,Kudo T,et al.Heat transfer characteristics of an integrated cooling configuration of ultra-high temperature turbine blades:experimental and numerical investigations .ASME Paper 2001-GT-0148,2001.
[4]	Yan Y Y,Owen J M.Uncertainties in transient heat transfer measurements with liquid crystal[J].International Journal of Heat and Fluid Flow,2002,23(1):29-35.
[5]	桂忠楼,张鑫华,钟振纲,等.高效冷却单晶涡轮叶片制造技术的发展[J].航空工程与维修,1998,232(2):11-13. GUI Zhonglou,ZHANG Xinhua,ZHONG Zhengang,et al.Manufacture technology denelopment of the single-crystal blades and vanes with highly effective cooling [J].Aviation Engineering and Maintenance,1998,232(2):11-13.(in Chinese)
[6]	郁新华,全栋梁,刘松龄.层板结构冷却有效性的研究[J].航空动力学报,2003,18(5):615-622. YU Xinhua,QUAN Dongliang,LIU Songling.Investigation of the cooling effectiveness of lamilloy[J].Journal of Aerospace Power,2003,18(5):615-622.(in Chinese)
[7]	全栋梁,刘松龄,李江海.层板冷却结构强化换热机理[J].航空动力学报,2004,19(6):860-865. QUAN Dongliang,LIU Songling,LI Jianghai.Numerical investigation on mechanism of heat transfer augmentation in lamilloy[J].Journal of Aerospace Power,2004,19(6):860-865.(in Chinese)
[8]	全栋梁.层板叶片冷却特性的研究 .西安:西北工业大学,2005. QUAN Dongliang.Investigation of the cooling characteristics of lamilloy turbine blade .Xian:Northwestern Polytechnical University,2005.(in Chinese)
[9]	陶智,吕东,丁水汀,等.扰流柱直径对倾斜出气孔层板内流动和换热影响的数值研究[J].航空动力学报,2007,22(4):540-546. TAO Zhi,LV Dong,DING Shuiting,et al.Numerical study on the influences of pin-fin diameter on the flow resistance and heat transfer of leaning vent hole lamilloy[J].Journal of Aerospace Power,2007,22(4):540-546.(in Chinese)
[10]	KONG Manzhao,ZHU Huiren,LIU Songling,et al.Internal heat transfer characteristics of lamilloy configurations[J].Chinese Journal of Aeronautics,2008,21(1):28-34.
[11]	张斌,朱惠人,许都纯.针板结构内壁面的换热特性研究[J].航空动力学报,2009,25(4):786-793. ZHANG Bin,ZHU Huiren,XU Duchun.Investigation of heat transfer characteristics of spiculate lamilloy internal[J].Journal of Aerospace Power,2009,25(4):786-793.(in Chinese)
[12]	朱惠人,许都纯,刘松龄,等.气膜孔形状对孔排下游换热的影响[J].航空动力学报,2001,16(4):360-364. ZHU Huiren,XU Duchun,LIU Songling,et al.Effect of film cooling hole shape on heat transfer [J].Journal of Aerospace Power,2001,16(4):360-364.(in Chinese)