Experiment on Discharge Coefficient and Cooling Characteristics of Double-wall of Concave wall in Reverse Flow Combustor

被引：0
|
作者：
Song S.-W. [1 ]
Zhao H.-H. [1 ,2 ]
Jiang S.-J. [1 ]
机构：
[1] AECC Hunan Aviation Powerplant Research Institute, Zhuzhou
[2] Research Institute of Aero-Engine, Beihang University, Beijing
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2023年 / 44卷 / 12期
关键词：
Concave wall; Cooling characteristics; Discharge coefficient; Impingement cooling; Reverse flow combustor;
D O I：
10.13675/j.cnki.tjjs.2210020
中图分类号：
学科分类号：
摘要：
In order to obtain the effects of coupling parameters（impingement aperture di，impingement spacing of flow direction of impingement hole S，spacing of span direction of impingement hole P），concave wall outer wall radius of curvature（R1，R2）on dimensionless discharge coefficient Cd/Cd，max and dimensionless cooling efficiency of double wall structure with concave wall in reverse flow combustor η/ηmax ，four groups of sixteen schemes were designed to carry out experimental research. The results show that S/P and R1/R2 have little effect on Cd/Cd，max. With the increase of S/P，η/ηmax shows a trend of increasing first and then decreasing，reaching the maximum value when S/P=0.8. With the increase of R1/R2，η/ηmax shows an increasing trend. With the increase of S/di and P/di，Cd/Cd，max and η/ηmax show a decreasing trend. © 2023 Journal of Propulsion Technology. All rights reserved.
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