Effect of relative space between mixing duct exits on the flow temperature

TANG Zheng-fu; ZHANG Jing-zhou; SHAN Yong

Chinese

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Effect of relative space between mixing duct exits on the flow temperature

更新时间：2026-07-07

- Effect of relative space between mixing duct exits on the flow temperature
- Vol. 23, Issue 7, (2008)
- 作者机构：
  
  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：2008
- 稿件说明：
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TANG Zheng-fu, ZHANG Jing-zhou, SHAN Yong. Effect of relative space between mixing duct exits on the flow temperature[J]. 2008, 23(7).
DOI：

TANG Zheng-fu, ZHANG Jing-zhou, SHAN Yong. Effect of relative space between mixing duct exits on the flow temperature[J]. 2008, 23(7). DOI：

摘要

就弯曲混合管出口与模型出口之间相对距离的改变

对一体化红外抑制器模型出口混合气流温度的影响进行了数值模拟和分析.并通过实验

对出口间距变化时模型壁面的红外辐射场进行了测量.结果表明

延长混合管出口与模型出口之间相对距离

可以增加混合管热排气与冷却气流的掺混距离

使模型出口混合气流温度峰值下降约42%;但同时会使模型壁面在3～5μm波段和8～14μm波段的红外辐射强度有所增加.

Abstract

Anumerical simulation and analysis of infrared radiation field of the integrative infrared suppressor model was performed to investigate the effects of space between the model exit and curved mixing duct exit

meanwhile the temperature field of the model exit was also obtained by numerical simulation.The results show that the mixing flow temperature of the model exit will decrease 42% by extending the distances between exits

because mixing hot exhaust with rotor downwash is enhanced greatly.At the same time

the infrared radiant intensity is increased slightly between3～5μm and 8～14μm.

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Related Institution

Science and Technology on Optical Radiation Laboratory,Beijing Institute of Environmental Features

School of Engineering Science,University of Chinese Academy of Sciences

State Key Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences

南京航空航天大学能源与动力学院

中国航空发动机集团有限公司商用航空发动机有限责任公司

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