Effect of area ratio of impingement hole to effusion hole on heat transfer characteristics of impingement-effusion composite cooling

ZHANG Bo; LI Ji-bao; JI Hong-hu; SHANG Shou-tang; CHENG Ming; WANG Yan-li

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Effect of area ratio of impingement hole to effusion hole on heat transfer characteristics of impingement-effusion composite cooling

更新时间：2026-07-07

- Effect of area ratio of impingement hole to effusion hole on heat transfer characteristics of impingement-effusion composite cooling
- Vol. 24, Issue 10, (2009)
- 作者机构：
  
  1. 南京航空航天大学能源与动力学院,南京,210016
  2. 中国航空工业集团公司沈阳发动机设计研究所,沈阳,110015
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009
- 稿件说明：
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ZHANG Bo, LI Ji-bao, JI Hong-hu, et al. Effect of area ratio of impingement hole to effusion hole on heat transfer characteristics of impingement-effusion composite cooling[J]. 2009, 24(10).
DOI：

ZHANG Bo, LI Ji-bao, JI Hong-hu, et al. Effect of area ratio of impingement hole to effusion hole on heat transfer characteristics of impingement-effusion composite cooling[J]. 2009, 24(10). DOI：

摘要

用数值计算的方法研究了冲击-多斜孔壁复合冷却方式的冷却特性

在保证当量开孔面积相同且压降相同的前提下

研究了冲击孔壁与多斜孔壁开孔面积比Ai/Ae变化对冷却特性的影响.研究发现

随着冲击孔与多斜孔开孔面积比减小

多斜孔壁气膜出流速度降低

气膜覆盖增强

冲击传热系数呈增大趋势

使得模型冷却效果增强;多斜孔壁热侧、冷侧与多斜孔孔内换热量随开孔面积比减小而减小

多斜孔内换热量在模型总体换热量中所占比例逐渐增加.

Abstract

The influence of area ratio to heat transfer characteristics of impingement-effusion double wall was investigated numerically

under the precondition of the same equivalent hole area.Results show that

with the decrease of area ratio of impinging hole to effusion hole

film flow velocity decreases

impinge cooling heat flux increases

and the cooling effectiveness enhances.The heat fluxes of hot side wall

cold side wall and effusion hole wall decrease with the area ratio

but the last one decreases least

and its quotient among the total heat flux increases.

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Related Author

DING Ji-ping

SI Ren

WANG Tao

SUO Jian-qin

LIANG Hong-xia

WANG Rong-juan

SHANG Shou-tang

CHENG Ming

Related Institution

School of Power and Energy,Northwestern Polytechnical University

National Key Laboratory on Aero-Engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics

Sichuan Gas Turbine Establishment，Aero Engine Corporation of China

Center for Instrumentation and Rig Testing， Shanghai Commercial Aircraft Engine Manufacturing Company Limited， Aero Engine Corporation of China

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