新型双层壁隔热屏气膜板内壁面换热特性数值研究

推进技术 ›› 2015, Vol. 36 ›› Issue (1): 68-74.

新型双层壁隔热屏气膜板内壁面换热特性数值研究

魏建生¹,郭涛¹,朱惠人¹,谢建光²

西北工业大学动力与能源学院，陕西西安 710072,西北工业大学动力与能源学院，陕西西安 710072,西北工业大学动力与能源学院，陕西西安 710072,中国燃气涡轮研究院，四川成都 610500

发布日期:2021-08-15
作者简介:魏建生(1991—)，博士生，研究领域为航空发动机高温部件冷却。
基金资助:
国家重点基础研究发展计划资助项目(2013CB035702)。

Numerical Investigation on Internal Heat Transfer Characteristic of Film Plate in a New Double-Wall Liner

School of Power and Energy， Northwestern Polytechnical University， Xi’an 710072， China,School of Power and Energy， Northwestern Polytechnical University， Xi’an 710072， China,School of Power and Energy， Northwestern Polytechnical University， Xi’an 710072， China and China Gas Turbine Establishment， Chengdu 610500， China

Published:2021-08-15

摘要/Abstract

摘要： 为了研究加入二次倾斜冲击后双层壁隔热屏内通道的流动特征和换热分布，通过数值模拟研究了不同冲击距离和不同中间孔直径下，冲击雷诺数在2500~7500，气膜板内壁面的换热系数分布特征。结果显示:冲击距离越短，高换热区域面积越大，平均换热系数越高；冲击距离对气膜孔所在环腔内的二次冲击和旋流之间的相互作用影响较大；中间孔直径越小，平均换热系数越高，气膜孔所在的环腔内二次冲击范围越小，漩涡冲击范围越大。

关键词: 双层壁；加力燃烧室；隔热屏；内换热；数值计算

Abstract: Numerical simulation was carried out to study the internal flow and heat transfer characteristics of the double-wall afterburner liner which was added with second oblique impingement. Internal heat transfer coefficient distribution on the film plate was investigated at different impingement distances and different middle-hole diameters in the Reynolds number range of 2500~7500. The results show that the region with high heat transfer extends and the area-average Nusselt number increases with the decrease of the impingement distance. The interaction of the second impingement and the vortex flow in the cavity where the film holes were located is mainly influenced by the variation of the impingement distance. In the cavity where the film holes were located，the region with the vortex impingement increases and the region of the second impingement decreases with the decrease of the middle-hole diameter. The area-average Nusselt number increases with the decrease of the middle- hole diameter.

Key words: Double-Wall；Afterburner；Liner；Internal Heat Transfer；Numerical investigation

魏建生,郭涛,朱惠人,谢建光. 新型双层壁隔热屏气膜板内壁面换热特性数值研究[J]. 推进技术, 2015, 36(1): 68-74.

WEI Jian-sheng¹,GUO Tao¹,ZHU Hui-ren¹,XIE Jian-guang². Numerical Investigation on Internal Heat Transfer Characteristic of Film Plate in a New Double-Wall Liner[J]. Journal of Propulsion Technology, 2015, 36(1): 68-74.

参考文献

[1] 陆永华, 常海萍, 谈浩元. 纵向波纹隔热屏通道的换热特性[J]. 推进技术, 2002,23(3), 230-232. (LU Yong-hua, CHANG Hai-ping, TAN Hao-yuan. Heating Transfer of Longitudinal Ripple Heat Shield Tunnel [J]. Journal of Propulsion Technology, 2002,23(3), 230-232.)
[2] Funazaki K, Igarashi T, Koide Y, et al. Studies on Cooling Air Ejected over a Corrugated Wall: Its Aerodynamic Behavior and Film Effectiveness[R]. ASME 2001-GT-143.
[3] 唐蝉, 常海萍, 毛军逵. 离散孔纵向波纹隔热屏气膜冷却特性研究[J]. 工程热物理学报, 2007, 28(3),487-489.
[4] 林宇震, 许全宏, 刘高恩. 燃气轮机燃烧室[M]. 北京:国防工业出版社, 2008.
[5] 陆永华. 加力燃烧室纵向波纹隔热屏通道换热特性的试验研究[D]. 南京:南京航空航天大学, 2002.
[6] Qian Yang, Yuzhen Lin, Quanhong Xu, et al. Cooling Effectiveness of Impingement/Effusion Cooling With and Without Turbulence Promoter Ribs[R]. ASME GT-2012-69209.
[7] Panda R, Prasad B. Conjugate Heat Transfer from a Flat Plate with Combined Impingement and Film Cooling[R]. ASME GT-2012-68830.
[8] Jingzhou Zhang, Hao Xie, Chengfeng Yang. Numerical Study of Flow and Heat Transfer Characteristics of Impingement/Effusion Cooling[J]. Chinese Journal of Aeronautics, 2009, 22(4): 343-348
[9] 林宇震, 俞文利, 刘高恩, 等. 冲击加发散双层壁冷却方式压降分配对斜孔内对流换热影响的研究[J]. 航空学报, 2003, 24(2): 97-101.
[10] 许全宏, 张宝华, 林宇震, 等. 冲击加多斜孔双层壁冷却方式气膜绝热温比研究[J]. 航空动力学报,2000, 15(4): 387-390.
[11] 许全宏, 林宇震, 刘高恩. 冲击加多斜孔双层壁冷却方式流量系数研究[J]. 推进技术, 2000, 21(5): 49-52. (XU Quan-hong, LIN Yu-zhen, LIU Gao-en. Discharge Coefficient of Double Wall with Discrete-Hole and Inclined Multihole For Combustor Liner[J]. Journal of Propulsion Technology, 2000, 21(5): 49-52.)
[12] Chambers A, Gillespie R. The Effect of Initial Cross Flow on the Cooling Performance of a Narrow Impingement Channel[J]. ASME Journal of Heat Transfer, 2005, 127: 358~365.
[13] 毛军逵, 缪国君, 刘震雄. 受限空间内斜向冲击凹柱面流场结构试验[J]. 航空动力学报, 2010, 25(1): 11-17.
[14] Ahad Ramezanpour, Iraj Mirzaee, David Firth, et al. A Numerical Heat Transfer Study of Slot Jet Impinging on an Inclined Plate[J]. International Journal of Numerical Methods for Heat & Fluid Flow, 2007, 17(7): 661-676.
[15] Taslim M E, Rosso N. Experimental/Numerical Study of Multiple Rows of Confined Jet Impingement Normal to a Surface at Close Distances[R]. ASME GT-2012-68634.
[16] Shevchuk I, Jenkins S, Weigand B, et al. Validation and Analysis of Numerical Results for a Varying Aspect Ratio Two-Pass Internal Cooling Channel[J]. ASME Journal of Heat Transfer, 2011, 133(05).(编辑:史亚红)　　　　　　　　　　　　　*　收稿日期:2013-11-12；修订日期:2014-01-07。基金项目:国家重点基础研究发展计划资助项目(2013CB035702)。作者简介:魏建生(1991—),博士生,研究领域为航空发动机高温部件冷却。E-mail:weijiansheng2007@163.com