Rig Test of Impingement/Effusion Double Wall Cooling Methods for the Main Combustor

XU Quan-hong; LIN Yu-zhen; LIU Gao-en

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Rig Test of Impingement/Effusion Double Wall Cooling Methods for the Main Combustor

更新时间：2026-07-07

- Rig Test of Impingement/Effusion Double Wall Cooling Methods for the Main Combustor
- Vol. 20, Issue 2, (2005)
- 作者机构：
  
  北京航空航天大学航空发动机气动热力国防科技重点实验室,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2005
- 稿件说明：
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XU Quan-hong, LIN Yu-zhen, LIU Gao-en. Rig Test of Impingement/Effusion Double Wall Cooling Methods for the Main Combustor[J]. 2005, 20(2).
DOI：

XU Quan-hong, LIN Yu-zhen, LIU Gao-en. Rig Test of Impingement/Effusion Double Wall Cooling Methods for the Main Combustor[J]. 2005, 20(2). DOI：

摘要

为检验冲击/发散双层壁冷却方式在真实工况下的冷却效果

在单头部高温高压燃烧试验台上对3种结构的冲击/发散双层壁实验件进行单头部高温高压综合验证考核试验。实验参数模拟推比10一级发动机燃烧室设计点参数进行综合考核验证。实验结果表明冲击/发散双层壁火焰筒冷却气量约为20%

总冷却效率在0.85～0.96之间

壁温低于1150K。

Abstract

For the investigation

a combustor sector with one burner head was used.Three different test pieces with impingement/effusion double wall cooling were selected for testing under high-temperature and high-pressure working conditions

which were equivalent to that of engines with a thrust/weight ratio of 10.The liner temperatures were measured using thermocouples.The test result shows that the amount of cooling airflow of double-layer wall combustor is 20% of the overall airflow

and the overall cooling effectiveness is in the range of 0.85 to 0.96.The wall temperatures of all test pieces are lower than 1 150 K.

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