计算物理 ›› 2018, Vol. 35 ›› Issue (2): 194-204.DOI: 10.19596/j.cnki.1001-246x.7603

• • 上一篇    下一篇

气动光学效应湍流脉动模型系数修正

潘宏禄, 李俊红, 程晓丽, 马汉东   

  1. 中国航天空气动力技术研究院, 北京 100074
  • 收稿日期:2016-12-13 修回日期:2017-01-20 出版日期:2018-03-25 发布日期:2018-03-25
  • 通讯作者: 李俊红,女,高级工程师,研究领域为气动热物理,E-mail:ljhong08@163.com
  • 作者简介:潘宏禄(1980-),男,高级工程师,研究领域为湍流和气动热物理,Email:honglu-pan@163.com
  • 基金资助:
    国家自然基金(1102199,11402254)资助项目

Model Coefficient Revision on Supersonic Turbulent Pulse for Aero-Optic Effect

PAN Honglu, LI Junhong, CHENG Xiaoli, MA Handong   

  1. China Academy of Aerospace Aerodynamics, Beijing 100074, China
  • Received:2016-12-13 Revised:2017-01-20 Online:2018-03-25 Published:2018-03-25

摘要: 以光学窗口的气动光学效应研究为背景,研究影响光学传输预测的流场湍流脉动量预测.选取平板、压缩拐角、凹腔流动模型,采用大涡模拟(LES)方法研究超声速湍流脉动工程预测模型的系数修正.结果表明:LES方法能够获得无激波干扰、强激波干扰及底部大分离条件下,湍流密度脉动的定量分布,并据此给出脉动工程模型的系数修正,结果已经应用于型号飞行器的光学窗口气动光学效应预测.

关键词: 气动光学效应, 湍流, 超声速边界层, 分离流动, 大涡模拟

Abstract: Aero-optic effect is investigated in supersonic/hypersonic flow. Flat plate, ramp and cave model in supersonic/hypersonic flow condition are studied with large eddy simulation (LES). Turbulent density pulse is predicted to verify coefficient of density pulse model-mixing length (ML) model. It indicates that LES method simulates turbulent density pulse well in flat plate boundary layer flow, oblique shock wave/boundary layer interaction and strong separation flow. Density pulse data obtained by LES is used to verify ML coefficient and set a quantitative result. The modified ML was used to predict aero-optical effect on missile successfully.

Key words: aero-optic, turbulence, supersonic boundary layer, separation flow, large eddy simulation

中图分类号: