计算气动光学研究进展

Progress in computational aero-optics

计算气动光学是采用数值计算的方法研究高速空气动力流场对光波传输和光学成像影响的一门交叉学科,在红外成像制导设计等工程应用中发挥着重要的作用。总结了计算气动光学研究的三种基本计算方法,包括基于CFD简化方法的光学统计估算、基于RANS流场的计算和基于LES/DNS瞬态流场的计算,对这三种计算方法的基本理论、计算过程进行了介绍,综述了新近的一些计算气动光学研究进展,最后指出了未来的研究重点和方向。

Computational aero-optics is the interdisciplinary science to study the influence of the high speed flow fields on the optical transmission and imaging with the method of numerical simulation.It plays an important role in the optical applications such as the system design of infrared imaging guidance.Three type of methods for the computational aero-optics study were summarized,including statistical optics approaches based on CFD engineering calculation,geometry/Fourier optics method based on the Reynolds averaged Navier-Stokes(RANS),and geometry/Fourier optics based on the large eddy simulation(LES)/direct numerical simulation(DNS).The theory and the compute technique of these three methods were introduced.The recent study on the computational aero-optics was summarized,and the emphasis of future work was point out.