基于稀薄气-粒两相流的蒙特卡洛颗粒辐射模型研究  

Study of Monte Carlo particles radiation model based on rarefied gas-particle two-phase plume flows

作　　者：徐振富[1] 李洁[1] 石于中[1] 刘英[1] 胡建峰[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《固体火箭技术》2012年第4期479-484,共6页Journal of Solid Rocket Technology

基　　金：国家自然科学基金资助项目(NO.10602063)

摘　　要：在气-粒两相相变模型及液态和固态颗粒碰撞、聚合和分离模型的基础上,发展稀薄条件下考虑颗粒辐射的蒙特卡洛颗粒辐射模型。通过对高超声速稀薄环境中的气-粒两相喷流流场的数值模拟,得到气-粒两相流的流场参数,利用所得流场参数作为颗粒辐射模型的初始参数进行颗粒辐射计算,同时考虑了有无探照发射时的光谱辐射强度。结果表明,在颗粒浓度较大时计算两相稀薄流的流场参数,考虑颗粒辐射是必要的,并且考虑有无探照发射对光谱辐射强度数值的影响。Based on the phase change model of gasparticle twophase and the collision, consolidation and separation model of liquid and solid particals, the Monte Carlo particle radiation model for rarefied flows was developed. Through simulating the gas par ticle twophase jet flow field of hypersonic rarefied flows, the parameter of twophase jet flow field was obtained. By using the param eter as the initial coming parameter for the particles radiation model, and considering spectral radiant intensity, particle radiation was calulated. The results show that it＇s essential to consider the particles radiation for the hypersonic rarefied gasparticle two phase flows,and the searchlight emission will impact the numerical result.

关 键 词：稀薄气体动力学 颗粒辐射 气-粒两相流 DSMC方法 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]