针对气动光学效应的RANS计算方法研究  

A study on RANS computation for aero-optical effects

作　　者：闫溟[1] 史可天[1] 马汉东[1] 

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《空气动力学学报》2013年第4期462-465,共4页Acta Aerodynamica Sinica

基　　金：科技部973计划(2009CB724105)

摘　　要：针对气动光学效应研究的特殊需求,发展了相应的RANS计算方法。首先对常规湍流模型进行评估,选出对平均密度空间分布预测较好的湍流模型;同时发展了光波折射率脉动值的输运方程,用以模化脉动密度对光学成像的畸变效应。针对一典型光学头罩作为研究对象,运用本文发展的计算方法对光学窗口流场的气动光学效应进行了计算和分析。A RANS method for aero-optical effects has been developed.An evaluation of compressible flow RANS model has been conducted and a model had been chosen to predict main flow density distribution better.A convect equation had been used to model the refractive index fluctuation.The aero-optical effects over a aero-optical turret is evaluated and analyzed using the method developed in this paper.

关 键 词：气动光学效应 湍流模式 湍流脉动 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]