Numerical Study of the Blowing Angle Effecton Effusi on Cooling Effectiveness

HU Ya-ping; JI Hong-hu

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Numerical Study of the Blowing Angle Effecton Effusi on Cooling Effectiveness

更新时间：2026-07-07

- Numerical Study of the Blowing Angle Effecton Effusi on Cooling Effectiveness
- Vol. 20, Issue 1, (2005)
- 作者机构：
  
  南京航空航天大学能源与动力学院,江苏,南京,210016
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2005
- 稿件说明：
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HU Ya-ping, JI Hong-hu. Numerical Study of the Blowing Angle Effecton Effusi on Cooling Effectiveness[J]. 2005, 20(1).
DOI：

HU Ya-ping, JI Hong-hu. Numerical Study of the Blowing Angle Effecton Effusi on Cooling Effectiveness[J]. 2005, 20(1). DOI：

摘要

采用数值模拟方法研究了冷气流的入射角对致密多孔壁冷却效果的影响

通过 9个算例分析比较入射角为 3 0°

60°和 90°情况下的冷却效果

在每个入射下吹风比M分别取为 0 .5 0

1 .0和 2 .0。结果表明 :随入射角的增大

冷却效果是降低的。无论M为何值

入射角为 3 0°和 60°时

整个平壁上冷却效果的分布都很相似 ;而入射角为 90°时冷却效果的分布则不然

虽然与前者比较起来其冷却效果最差

但与常规气膜冷却相比

入射角为 90°时的冷却效果值仍然很高

Abstract

The influences of the coolant flow blowing angle α on the effusion cooling effectiveness of a porous plate were investigated.Nine cases were studied

which cover three blowing angles of α=30°

60°

90° and for each angle three blowing ratios of M=0.5

1.0

2.0.The results show that with the increase of α the cooling effectiveness reduces for all the calculated cases.For cases of α=30° and 60° the distribution of cooling effectiveness η along the whole plate are very similar for any given blowing ratio.While for the cases of α=90°

the distributions of cooling effectiveness are quite different.Although the cooling effectiveness of the cases with α=90° for any given blowing ratio is the worst among the three angles stated

its absolute value is still quite high compared with the conventional film cooling.

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