出口分流装置对振荡射流流场的影响

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出口分流装置对振荡射流流场的影响

研究论文 | 更新时间：2026-05-28

- 出口分流装置对振荡射流流场的影响
- The influence of splitter on the flow dynamics in a continuous-discrete pulsing jet fluidic oscillator
- 空气动力学学报 2023年41卷第4期页码：104-115
- 作者机构：
  
  1. 上海交通大学机械与动力工程学院叶轮机械研究所,上海,200240
  2. 中国空气动力研究与发展中心低速空气动力研究所,绵阳,621000
  3. 中国航空发动机集团有限公司中国航空发动机研究院,北京,101304
- 作者简介：
  
  杨帆（1998-），男，上海人，硕士研究生，研究方向：钝体绕流及流动控制. E-mail：20yf20@sjtu.edu.cn
  王士奇*，高级工程师，研究方向：非定常激励主动流动控制，航空发动机内流主动控制. E-mail：wangsq6@126.com
- 基金信息：
  
  先进航空动力创新工作站项目（HKCX2019-01-016）
- DOI：10.7638/kqdlxxb-2022.0147
  中图分类号： TP602
- 纸质出版：2023
- 稿件说明：
移动端阅览
杨帆, 温新, 何创新, 等. 出口分流装置对振荡射流流场的影响[J]. 空气动力学学报, 2023, 41(4): 104−115.

YANG Fan, WEN Xin, HE Chuangxin, et al. The influence of splitter on the flow dynamics in a continuous-discrete pulsing jet fluidic oscillator[J]. 2023, 41(4): 104-115.
杨帆, 温新, 何创新, 等. 出口分流装置对振荡射流流场的影响[J]. 空气动力学学报, 2023, 41(4): 104−115. DOI： 10.7638/kqdlxxb-2022.0147

YANG Fan, WEN Xin, HE Chuangxin, et al. The influence of splitter on the flow dynamics in a continuous-discrete pulsing jet fluidic oscillator[J]. 2023, 41(4): 104-115. DOI： 10.7638/kqdlxxb-2022.0147.

摘要

为了探究连续-离散脉冲式振荡器内部的流动过程及分流楔对出口峰值速度和振荡频率的影响，二维非定常模拟了五种工况下的两种分流距离的连续-离散脉冲式振荡器以及连续扫掠式振荡器的内部流场。结果表明：该类构型振荡器出口速度普遍具有三峰值特性，且当分流距离增长时第一峰值速度（

$ {U}_{\mathrm{m}\mathrm{a}\mathrm{x}

1

\mathrm{O}} $

<

img text_id='M1' class='formula-img' style='display:none;' src='2022-147_M1.jpg'>

）下降，第三峰值速度（

$ {U}_{\mathrm{m}\mathrm{a}\mathrm{x}

3

\mathrm{O}} $

<

img text_id='M2' class='formula-img' style='display:none;' src='2022-147_M2.jpg'>

）上升，而第二峰值速度（

$ {U}_{\mathrm{m}\mathrm{a}\mathrm{x}

2

\mathrm{O}} $

<

img text_id='M3' class='formula-img' style='display:none;' src='2022-147_M3.jpg'>

）受到的影响较小；当入口流量在一定范围内变化时，三峰值速度具有一定的大小关系：

$ {U}_{\mathrm{m}\mathrm{a}\mathrm{x}

3

\mathrm{O}} ＞ $

<

img text_id='M4' class='formula-img' style='displ

ay:none;' src='2022-147_M4.jpg'>

$ {U}_{\mathrm{m}\mathrm{a}\mathrm{x}

1

\mathrm{O}}{ ＞ U}_{\mathrm{m}\mathrm{a}\mathrm{x}

2

\mathrm{O}} $

<

img text_id='M4-1' class='formula-img' style='display:none;' src='2022-147_M4-1.jpg'>

，其中

$ {U}_{\mathrm{m}\mathrm{a}\mathrm{x}

1

\mathrm{O}} $

<

img text_id='M1' class='formula-img' style='display:none;' src='2022-147_M1.jpg'>

在入口流量过大或过小时，有随之同向变化的趋势。连续-离散脉冲式振荡器振荡频率随分流距离增长呈先降低后升高的变化趋势，但连续扫掠式振荡器始终最高且与前者的差值随流量增大而增大。研究中还发现，当分流距离增长或入口流量减小后，将使该类构型振荡器出口速度具有更多波动。该研究结果可为优化连续-离散脉冲式振荡器设计以及相关流动控制方案设计提供支撑。

Abstract

This paper studies the internal flow dynamics of a continuous-discrete pulsing jet fluidic oscillator and the influence of splitter on its outlet peak velocity and oscillating frequency. For that purpose

two-dimensional unsteady numerical simulations were conducted

covering five different inlet mass flowrates

$\dot m $

<

img text_id='Z-20230403165540' class='formula-img' style='display:none;' src='2022-147_Z-20230403165540.jpg'>

and three oscillator models (two continuous-discrete pulsing oscillators with different splitting distances and a continuous sweeping oscillator).Results show that there are at least three different velocity peaks in one period at both outlets of continuous-discrete pulsing oscillators. When the splitting distance increases

the first peak velocity (

U

max

1

O

) decreases

the third one (

U

max

3

O

) increases

while the second peak velocity (

U

max

2

O

) is less affected; the three peak velocities generally satisfy

U

max

3

O

＞

U

max

1

O

＞

U

max

2

O

unless

$\dot m $

<

img text_id='Z-20230403165540' class='formula-img' style='display:none;' src='2022-147_Z-20230403165540.jpg'>

is extremely large or small.When the splitting distance increases

oscillating frequency decreases at first and then increases

but the frequency of continuous sweeping oscillator is always the highest and the difference of the other two keeps rising as

$\dot m $

<

img text_id='Z-20230403165540' class='formula-img' style='display:none;' src='2022-147_Z-20230403165540.jpg'>

increases.Results also show that when the splitting distance was increased or

$\dot m $

<

img text_id='Z-20230403165540' class='formula-img' style='display:none;' src='2022-147_Z-20230403165540.jpg'>

was reduced to a certain extent

the outlet velocity’s oscillating pattern changes

including the significant velocity fluctuations both before and after

U

max

1

O

the phase shift and the great amplitude increase of

U

max

2

O

.The research results are of great importance in supporting the design optimization of the continuous-discrete pulsing oscillator and the development of flow control method with this kind of fluidic actuators.

关键词

Keywords

references

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