Numerical simulation of effusion holes on the longitudinal ripple heat shield

TANG Chan; CHANG Hai-ping

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Numerical simulation of effusion holes on the longitudinal ripple heat shield

更新时间：2026-07-07

- Numerical simulation of effusion holes on the longitudinal ripple heat shield
- Vol. 24, Issue 1, (2009)
- 作者机构：
  
  1. 南京工程学院能源与动力工程学院,南京,211167
  2. 南京航空航天大学能源与动力学院,南京,210016
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009
- 稿件说明：
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TANG Chan, CHANG Hai-ping. Numerical simulation of effusion holes on the longitudinal ripple heat shield[J]. 2009, 24(1).
DOI：

TANG Chan, CHANG Hai-ping. Numerical simulation of effusion holes on the longitudinal ripple heat shield[J]. 2009, 24(1). DOI：

摘要

对燃烧室内开有发散孔的纵向波纹隔热屏进行了数值模拟.研究隔热屏的四种结构参数开孔率、波纹板高度、孔径和冷却通道高度的改变对隔热屏冷却效果的影响.研究表明:在气膜孔出流总量相同的情况下

3%开孔率比6%开孔率的隔热屏平均冷却效率较高;波纹板高度对隔热屏冷却效果影响较大

波纹板无量纲高度为1%比波纹板无量纲高度为2%和3.33%的隔热屏平均冷却效率高;孔径和冷却通道高度的改变对隔热屏冷却效果几乎没有影响.

Abstract

The numerical simulation was used to study the effusion holes on the longitudinal wavy liner in the combustor.The investigation focused on the parameters affecting cooling effectiveness

including: opening ratio

height of ripple board

diameter of holes and height of cooling passage.Given the same total flow effusion from holes

the results show that the heat shield gets a higher average cooling effectiveness when the opening ratio is 3% compared with 6%;cooling effectiveness is sensitive to the height of ripple board

the heat shield gets the highest cooling effectiveness when the dimensionless height of ripple board is 1% compared with 2% and 3.33%;but there is a little influence on the cooling effectiveness of the liner with the change of the diameter of holes and the height of cooling passage.

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