Influence of the plate on the cavity flow-induced oscillations and the modification of the oscillation frequency equation

SI Hai-qing; WANG Tong-guang; ZONG Hui-Ying

Chinese

您当前的位置：

首页 >

文章列表页 >

Influence of the plate on the cavity flow-induced oscillations and the modification of the oscillation frequency equation

更新时间：2026-07-07

- Influence of the plate on the cavity flow-induced oscillations and the modification of the oscillation frequency equation
- Vol. 21, Issue 6, (2006)
- 作者机构：
  
  南京航空航天大学航空宇航学院,江苏,南京,210016
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2006
- 稿件说明：
移动端阅览
SI Hai-qing, WANG Tong-guang, ZONG Hui-Ying. Influence of the plate on the cavity flow-induced oscillations and the modification of the oscillation frequency equation[J]. 2006, 21(6).
DOI：

SI Hai-qing, WANG Tong-guang, ZONG Hui-Ying. Influence of the plate on the cavity flow-induced oscillations and the modification of the oscillation frequency equation[J]. 2006, 21(6). DOI：

摘要

运用全隐式无分裂方法

紊流模型采用修正的B-L代数模型

数值模拟了超音速流通过腔内存在平板的空腔流动。研究了腔内有不同长度平板存在的空腔流动的剪切层自持性振荡

并与无平板存在时的现象进行类比。腔内平板将剪切层与空腔隔开

减弱了剪切层振荡与空腔压强脉动的耦合作用;随着腔内平板长度的增加

剪切层振荡的程度有所减小。基于特征长度可变的思想

本文改进了Heller的频率预估方程

改进后的频率方程能更好地预估空腔的振荡频率。与Heller的方程相比

修改后的方程预估所得到的频率值更接近于闭式空腔声学模型方程的预估结果;各个方程预估空腔振荡频率值的比较进一步验证了改进后的方程的正确性及合理性。

Abstract

A numerical solution of the three-dimensional URANS equation was presented using the fully implicit unfactored methods

where the turbulent coefficient was calculated based on the revised B-L turbulence model

and numerical simulations were implemented for supersonic three-dimensional open cavities.The self-sustained oscillatory motion of the shear layer was studied for plates with different lengths.The plate in the cavity isolates the shear layer and the cavity

and therefore reduces the coupling between the cavity pressure fluctuations and the shear layer.The oscillation of the shear layer decreases with the increase of the plate length.Based on the different characteristic lengths

Heller’s frequency equation was modified.The frequencies predicted by the modified equation agree with those by the close-box acoustic model;several comparisons demonstrate the validity of the modified equation.

关键词

Keywords

references

Views

485

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical simulation of the three-dimensional flow field of transonic turbine cascade

Numerical Prediction of Multi-Stage Axial Flow Compressor off-Design Performances

Prediction method on equivalent thermal conductivity coefficient of plain braided C/SiC composites material based on finite element method

Aerodynamic characteristics of design Mach number of 5 two-dimensional inlet with mixed-compression under typical condition

A spongy icing model for aircraft icing and application

Related Author

ZENG Jun

XIANG Chuan-guo

CHENG Xin-hua

LIU Qian-zhi

LU Si-da

GAO Xi-guang

SONG Ying-dong

WENG Xiao-chai

Related Institution

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

Gas Turbine Establishment of China

Harbin Institute of Technology

Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics

Department of Power and Propulsion, School of Engineering, Cranfield University, Bedfordshire MK4

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