双排叉排孔气膜冷却特性研究 (二) 绝热有效温比
AN INVESTIGATION ON FILM-COOLING FROM TWO-STAGGERED ROWS OF HOLES ——(2)EFFECTIVENESS
-
摘要: 本文介绍双排叉排孔气膜冷却绝热有效温比η的测量结果和数值计算。根据η沿主流和横向的变化, 特别是在近孔区的分布规律分析了前后排孔二次射流的不同流动特点。数值计算采用求解椭圆方程的三维差分程序, 吹风比M等于0.6。Abstract: The experimental results and numerical computation of film cooling effectiveness downstream of injection from two staggered rows of holes are presented in this paper.On the basis of measured effectiveness in both streamwise and spanwise directions,especially in the region close to injection holes,the different heat transfer behaviors of the jets from upstream and downstream rows are analyzed.In the computation,a three dimensional calculation procedure is used to solve the related elliptic equations and the results agree well with present measurements far downstream.The discrepancies are increased in the near injection region.
点击查看大图
计量
- 文章访问数: 1415
- HTML浏览量: 5
- PDF量: 494
- 被引次数: 0