Flow field structures and density fluctuation characteristics around a blunted double cone with cooling jet

朱志斌; 潘宏禄; 程晓丽

doi:10.13224/j.cnki.jasp.2019.07.003

Chinese

您当前的位置：

首页 >

文章列表页 >

Flow field structures and density fluctuation characteristics around a blunted double cone with cooling jet

更新时间：2026-07-07

- Flow field structures and density fluctuation characteristics around a blunted double cone with cooling jet
- Vol. 34, Issue 7, Pages: 1425-1462(2019)
- 作者机构：
  
  中国航天科技集团有限公司中国航天空气动力技术研究院空气动力理论与应用研究所,北京,100074
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.2019.07.003
  CLC：
- Published：2019
- 稿件说明：
移动端阅览
朱志斌, 潘宏禄, 程晓丽. 钝头双锥喷流致冷流场结构及密度脉动特性[J]. 航空动力学报, 2019, 34(7): 1425-1462.

doi: 10.13224/j.cnki.jasp.2019.07.003
朱志斌, 潘宏禄, 程晓丽. 钝头双锥喷流致冷流场结构及密度脉动特性[J]. 航空动力学报, 2019, 34(7): 1425-1462. DOI： 10.13224/j.cnki.jasp.2019.07.003.

doi: 10.13224/j.cnki.jasp.2019.07.003 DOI：

摘要

采用大涡模拟方法对钝头双锥喷流致冷流场开展了数值模拟

研究了超声速喷流混合流场结构特征及密度脉动特性。大涡模拟方法基于隐式亚格子模型

空间离散采用高精度通量限制型紧致格式

时间推进采用显式Runger-Kutta方法。数值模拟清晰地捕捉到了流场波系结构

精细地预测了流动发生失稳、转捩以及发展为充分发展湍流的物理过程

直接获得了流场密度脉动特性。通过有、无喷流状态对称面流场的对比

发现超声速喷流能够有效冷却光学窗口;喷流与主流形成的混合层不稳定

很快发生失稳和转捩

形成大尺度湍流结构

进而引起强烈的密度脉动。此外

获得了钝头双锥整体模型喷流致冷流场的空间发展形态特征。

Abstract

Large eddy simulation was utilized for the simulation of supersonic cooling jet flow filed around a blunted double cone

and the flow structures and density fluctuation characteristics were analyzed. The large eddy simulation method was based on the implicit sub-grid model

and the high-order flux limited compact scheme and explicit Runger-Kutta method were utilized for the spatial discretization and time advancing. The present simulation clearly captured the flow field discontinuity. The processes of flow becoming unstable and transiting to turbulence were predicted subtly. Besides

the characteristics of the flow field density fluctuation were obtained directly. By comparison with the none-jet state

it revealed that gas film formed by the supersonic jet can effectively cool the optical window

and the mixing layer formed by the main flow and jet flow became unstable

and transited to turbulence quickly

causing large scale turbulence structures and intense density fluctuation. In addition

the spatial development characteristics of cooling jet flow field around the whole model are obtained.

关键词

Keywords

references

Views

676

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Large eddy simulation of supersonic jet mixing flow

Nonlinear analysis of large eddy simulated supersonic two-phase mixing layer

Flow field characteristics of underwater supersonic over⁃expanded gas jet

Large eddy simulation of cryogenic jet under supercritical pressure based on OpenFOAM

Analysis of n⁃dodecane spray jet by proper orthogonal decomposition

Related Author

朱志斌

程晓丽

潘宏禄

WU Hai-yan

TAO Yu-jing

WANG Yu

ZHOU Jin

Chun ZHANG

Related Institution

中国航天科技集团有限公司中国航天空气动力技术研究院

College of Aerospace and Material Engineering, National University of Defense Technology

National Key Laboratory on Hydrodynamics，China Ship Scientific Research Center

National Key Laboratory of Science and Technology on Liquid Rocket Engines，Xi'an Aerospace Propulsion Institute，China Aerospace Science and Technology Corporation

Academy of Aerospace Propulsion Technology，China Aerospace Science and Technology Corporation

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