Investigation on Two-Flow Mixing Enhancement by Small Tabs at Atmospheric Pressure

CHEN Fang; WU Shou sheng; WEI Fu qing; HUANG Yong

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Investigation on Two-Flow Mixing Enhancement by Small Tabs at Atmospheric Pressure

更新时间：2026-07-07

- Investigation on Two-Flow Mixing Enhancement by Small Tabs at Atmospheric Pressure
- Vol. 17, Issue 1, (2002)
- 作者机构：
  
  北京航空航天大学动力系,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2002
- 稿件说明：
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CHEN Fang, WU Shou sheng, WEI Fu qing, et al. Investigation on Two-Flow Mixing Enhancement by Small Tabs at Atmospheric Pressure[J]. 2002, 17(1).
DOI：

CHEN Fang, WU Shou sheng, WEI Fu qing, et al. Investigation on Two-Flow Mixing Enhancement by Small Tabs at Atmospheric Pressure[J]. 2002, 17(1). DOI：

摘要

在常压、双涵进气条件下

以常规环形混合器为基准

通过不同小突片强化混合结构的对比试验

初步探讨了小突片的个数、安装角度等结构参数对排气混合系统气动性能的影响。试验结果表明:小突片能很好地强化内外涵气流的混合

使下游流场出现明显的变形

系统的卷吸量、混合均匀性均得到改善

但是压头损失系数有所增加; 多个小突片沿周向均匀分布

且交替向内外倾斜

能更有效地强化混合。

Abstract

A variety of exhaust mixers with small tabs in comparison with a conventional annular exhaust mixer were tested at atmospheric pressure to study the effects of tab structure parameters-number and fix angles on the aerodynamic characteristics of the exhaust mixer system.The results showed that:Small tabs could enhance two flow mixing

distort downstream flowfield

increase entrainment

and improve system mixing uniformity

but the pressure loss coefficient of the system would increase a bit.Several tabs well distributed and alternately tilted inward and outward around the nozzle exit were more effective on the two flow mixing enhancement.

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Related Author

SHAN Yong

ZHANG Jing-zhou

ZHU Hua-ping

ZHANG Yu-fang

HUANG Yong

WANG Fang

WU Yao-zeng

XIAO Ying

Related Institution

College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics

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

Institute of Automation, Naval Academy of Armamet

th Dept., Beijing University of Aeronautics and Astronautics

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