Oscillation characteristics of two planar opposed jets

SUN Zhigang; LI Weifeng; LIU Haifeng; YU Zunhong

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Oscillation characteristics of two planar opposed jets

更新时间：2025-12-10

- Oscillation characteristics of two planar opposed jets
- CIESC Journal Issue 2, Pages: 338-344(2009)
- 作者机构：
  
  华东理工大学煤气化教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 February 2009，
  
  Published：05 February 2009
- 稿件说明：
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SUN Zhigang, LI Weifeng, LIU Haifeng, et al. Oscillation characteristics of two planar opposed jets[J]. CIESC Journal, 2009, (2): 338-344.
DOI：

SUN Zhigang, LI Weifeng, LIU Haifeng, et al. Oscillation characteristics of two planar opposed jets[J]. CIESC Journal, 2009, (2): 338-344. DOI：

摘要

对两对置平面喷嘴形成的撞击流的振荡特性进行了实验研究。采用高速摄像仪、烟线流场显示和热线测量的方法，研究了不同喷嘴间距、不同喷嘴出口气速下平面喷嘴撞击流的振荡行为。研究结果表明，平面撞击流的振荡特性主要有流向拟周期振荡和偏斜振荡两种，当L<5H时主要为流向拟周期振荡模式，当L>5H时主要为偏斜振荡模式。

Abstract

he oscillation characteristics of two planar opposed jets were studied by using high-speed camera

smoke wire visualization and hot-wire anemometry (HWA).The oscillation periods of two planar opposed jets at different nozzle separations and exit nozzle velocities were studied.The results showed two models of instabilities:streamwise quasi-periodic oscillation model and deflection oscillation model.The oscillation model was mainly streamwise quasi-periodic oscillation model at L<5H (where L was the nozzle separation and H was the nozzle slot height)

and it was mainly deflection oscillation model at L>5H.The deflection oscillation model had a stable period which decreased with increasing normalized nozzle separation.

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LI Weifeng

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LIU Haifeng

WANG Fuchen

YU Zunhong

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YANG Xuefeng

Related Institution

华东理工大学资源与环境工程学院煤气化教育部重点实验室

四川大学化学工程学院

华盛顿大学化工系

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