Effect of mass ejection on boundary layers stability

LI Jin; SU Wei; HUANG Zhangfeng

doi:10.13224/j.cnki.jasp.2020.02.007

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Effect of mass ejection on boundary layers stability

更新时间：2026-07-07

- Effect of mass ejection on boundary layers stability
- Vol. 35, Issue 2, Pages: 280-293(2020)
- 作者机构：
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- DOI：10.13224/j.cnki.jasp.2020.02.007
  CLC：
- Published：2020
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李瑾, 苏伟, 黄章丰. 质量引射对边界层稳定性的影响[J]. 航空动力学报, 2020, 35(2): 280-293.

doi: 10.13224/j.cnki.jasp.2020.02.007
李瑾, 苏伟, 黄章丰. 质量引射对边界层稳定性的影响[J]. 航空动力学报, 2020, 35(2): 280-293. DOI： 10.13224/j.cnki.jasp.2020.02.007.

doi: 10.13224/j.cnki.jasp.2020.02.007 DOI：

摘要

采用直接数值模拟（DNS）方法和线性稳定性理论(LST)研究了质量引射对马赫数为6的钝板边界层中第二模态扰动演化的影响。研究了质量引射及扰动的不同因素对扰动演化的影响

包括引射速度幅值、引射宽度、位置、组合以及体积流量。研究结果表明:质量引射对二维和三维扰动波都起不稳定作用

当引射位置接近扰动波中性曲线的下支界时

不稳定作用最明显;体积流量是决定质量引射对边界层作用的重要因素;当体积流量较小时

质量引射组合放置能起到单个质量引射叠加的效果;LST预测得到的N值修正与直接数值模拟的结果相近

可以定量地反映质量引射对边界层流动稳定性的影响。

Abstract

The effect of the mass ejection on the evolution of the second-mode disturbances in a boundary layer of Mach number of 6 on a blunt plate was investigated by using direct numerical simulation (DNS) method and linear stability theory (LST). Different parameters of the mass ejection and disturbances

such as the ejection velocity

width

location

combination and volume flowrate

were considered. Results showed that: the mass ejection destabilized the two-dimensional and three-dimensional disturbance waves

and the effect was the strongest when the ejection position was close to the lower bound of the neutral curve of disturbances; the volume flowrate was an important factor to determine the effect on the evolution of disturbances; the combined mass ejection had the superposition effect when its volume flowrate was small; the value of N predicted by LST was close to the direct numerical simulation result

implying that LST can quantitatively determine the effect of the mass ejection on the stability of boundary layer.

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Related Author

LI Chuang

DONG Ming

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LI Guo-liang

LIU Zhi-yong

TU Guo-hua

Qian WANG

Zhangfeng HUANG

Related Institution

The 1st Institute, China Academe of Aerospace Aerodynamics

National Computational Fluid Dynamics Laboratory, China Aerodynamics Research and Development Center

Department of Mechanics，School of Mechanical Engineering，Tianjin University

Department of Thermal Science and Energy Engineering，University of Science and Technology of China

Shenyang Engine Research Institute，Aero Engine Corporation of China

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