驻涡燃烧室发散冷却方案试验
Experimental investigation on transpiration cooling of trapped vortex combustor
-
摘要: 设计了两种适用于驻涡燃烧室的发散冷却结构,发散孔的倾角分别为30?和150?,并通过试验研究了两种冷却结构在不同位置处,不同温比及吹风比条件下的冷却效果.试验结果表明,两种冷却结构均具有较高的绝热效率;两种结构的绝热效率随主流温度或吹风比的变化规律相同;凹腔前壁面的绝热效率最高,后壁面的绝热效率最低;在相同试验条件下,倾角150?冷却结构的绝热效率高于倾角30?冷却结构的绝热效率;随着冷却气量的减小,两者之间的差距逐渐增大.最后,通过数值计算方法对试验结果进行了分析.Abstract: Two kinds of transpiration cooling schemes of trapped vortex combustor were designed,and two angles of transpiration cooling holes were 30 ? and 150 ?.The cooling efficiency test was conducted to study the performance of cooling in different locations,different temperature ratios and blowing ratios.The experimental results show that two cooling structures have high cooling efficiency;and the cooling efficiency variation with mainstream temperature or blowing ratio is similar to each other.For the wall of cavity,the cooling efficiency of fore-wall is the highest and the cooling efficiency of after-wall is the lowest.Under the same experimental conditions,the cooling efficiency of the structure at angle 150 ? is higher than that of the structure at angle 30 ?.At the same time,with the decline of cooling gas rate,the difference between them will increase.Finally,the test results were analyzed by numerical methods.
-
[1] Hsu K Y,Goss L P,Trump D D.Performance of a trapped-vortex combustor[R].AIAA 95-0810,1995. [2] Roquemore W M,Shousese D T,Burrus D R,et al.Trapped vortex combustor concept for gas turbine engines[R].AIAA 2001-0483,2001. [3] Straub D L,Casleton K H,Lewis R E,et al.Assessment of rich-burn,quick-mix,lean-burn trapped vortex combustor for stationary gas turbines[J].ASME J.Eng.Gas Turbines Power,2005,127(1):36-41. [4] Brankovic A,Ryder R.Emissions prediction and measurement for liquid fueled TVC combustor with and without water injection[R].AIAA 2005-0215,2005. [5] Mehta J M,Shouse D, Cox B,et al.Innovative SiC-SiC ceramic liner for the trapped votex combustor concept[R].AIAA 2004-689,2004. [6] Mancilla P C,Charka P,Acharya S,et al.Performance of a trapped vortex spray combustor[R].ASME 2001-GT-0058,2001. [7] 张荣春,樊未军,邢菲.涡轮级间单涡燃烧室壁温研究[J].航空动力学报,2010,25(7):1512-1517. ZHANG Rongchun,FAN Weijun,XING Fei.Study of wall temperature on the interstage turbine single vortex combustor[J].Journal of Aerospace Power,2010,25(7):1512-1517.(in Chinese) [8] 林宇震.燃烧室多斜孔壁气膜冷却研究[D].北京:北京航空航天大学,1997. LIN Yuzhen.An investigation of the inclined multihole wall film cooling combustion chamber[D].Beijing:Beijing University of Aeronautics and Astronautic,1997.(in Chinese) [9] 谢浩.冲击-发散复合冷却流动与传热特性的数值研究[D].南京:南京航空航天大学,2005. XIE Hao.Numerical study on flow and heat transfer characteristics of impingment/effusion cooling mode[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2005.(in Chinese) [10] Champion J L,Deshaies B.Experimental investigation of the wall flow and cooling of combustion chamber walls[R].AIAA 95-2498,1995. [11] 胡娅萍,吉洪湖.孔阵排列疏密度对致密多孔壁冷却效果的影响[J].推进技术,2005,26(1):28-33. HU Yaping,JI Honghu.Effect of porosity of holes array on cooling effectiveness of effusion cooling[J].Journal of Propulsion Technology,2005,26(1):28-33.(in Chinese) [12] 胡娅萍,吉洪湖.致密多孔壁冷流入射角对冷却效果影响的数值研究[J].航空动力学报,2005,20(1):116-119. HU Yaping,JI Honghu.Numerical study of the blowing angle effect on effusion cooling effectiveness[J].Journal of Aerospace Power,2005,20(1):116-119.(in Chinese) [13] 宋波,林宇震,刘高恩,等.不同排列方式多斜孔壁气膜冷却绝热温比研究[J].航空动力学报,1999,14(1):91-94. SONG Bo,LIN Yuzhen,LIU Gaoen,et al.An investigation on film cooling effectiveness of inclined-mutihole walls with different patterns[J].Journal of Aerospace Power,1999,14(1):91-94.(in Chinese) [14] 葛绍岩,刘登瀛,徐靖中,等.气膜冷却[M].北京:科学出版社.
点击查看大图
计量
- 文章访问数: 1665
- HTML浏览量: 0
- PDF量: 12
- 被引次数: 0