Effect of concave groove on the stability of boundary layer

LIU Kai-ping; LUO Ji-sheng

doi:10.13224/j.cnki.jasp.2016.01.022

Chinese

您当前的位置：

首页 >

文章列表页 >

Effect of concave groove on the stability of boundary layer

更新时间：2026-07-07

- Effect of concave groove on the stability of boundary layer
- Vol. 31, Issue 1, Pages: 168-178(2016)
- 作者机构：
  
  天津大学机械工程学院力学系,天津,300072
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.2016.01.022
  CLC：
- Published：2016
- 稿件说明：
移动端阅览
刘开平, 罗纪生. 凹型粗糙元对边界层稳定性的影响[J]. 航空动力学报, 2016, 31(1): 168-178.

doi: 10.13224/j.cnki.jasp.2016.01.022
刘开平, 罗纪生. 凹型粗糙元对边界层稳定性的影响[J]. 航空动力学报, 2016, 31(1): 168-178. DOI： 10.13224/j.cnki.jasp.2016.01.022.

doi: 10.13224/j.cnki.jasp.2016.01.022 DOI：

摘要

为了能够利用eN方法对带有凹型粗糙元的平板边界层进行转捩预测.通过数值模拟和流动稳定性的方法研究了马赫数为4.5的超声速边界层中凹型粗糙元对扰动演化的影响.对两种尺度的凹型粗糙元下扰动沿流向的幅值和增长率分布进行了计算.结果表明:凹型粗糙元对基本流的影响只是局限在凹型粗糙元及其附近很小的范围内.凹型粗糙元对扰动幅值的演化有抑制作用

尺度越大抑制作用越明显.在凹型粗糙元的后面

凹型粗糙元对扰动幅值的增长率的影响很小

相对变化量在2%以内.验证了对壁面有凹型粗糙元的情况

可以通过流动稳定性分析加N值修正的方法进行转捩预测.

Abstract

In order to predict the transition position using eN method for flat boundary layer with concave groove

the effects of concave groove on the evolution of disturbance in supersonic boundary layer with Mach number of 4.5 were studied by numerical simulation and flow stability method. The amplitude and growth rate distribution along the flow direction with two sizes of concave groove was revealed. The results show that the range of effect of concave groove on the basic flow is only limited in the concave groove and near range. Concave groove has a suppressed effect on the evolution of disturbance to some extent

the bigger size means the more obvious inhibitory effect. After concave groove

the effect of concave groove on the growth rate of disturbance amplitude is little

and relative variation is smaller than 2%.At the same time

the position of transition can be predicted more accurately with a smaller concave groove by eN method combined with stability analysis and a correction factor of N.

关键词

Keywords

references

Views

494

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Impact of local cavities on evolution of the second-mode disturbances in hypersonic boundary layers

Effect of transport properties of high-temperature air on boundary layer stability and transition prediction

Application of emethod in three-dimensional hypersonic boundary layers

Generation conditions of streamwise vortex in supersonic flat⁃plate boundary layer

Flow and heat transfer characteristics of round⁃hole film cooling with crater

Related Author

LI Chuang

DONG Ming

万兵兵

韩宇峰

樊宇

罗纪生

YU Gao-tong

Qian WANG

Related Institution

天津大学机械工程学院力学系

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

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

AI问答

Postal code：100079
Tel：（010）53879206 Email：tmw@bjxintong.com.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09082226号-64 京公网安备11010602201714号
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰