摘要
从考虑转动松弛变化特性的Rykov模型出发,基于Boltzmann模型方程求解跨流域气体运动论统一算法原理与计算规则,采用转动惯量描述气体分子自旋运动,研究考虑转动非平衡影响的Boltzmann模型方程数值求解方法.通过对氮气激波结构、二维钝头体和三维尖双锥跨流域绕流的模拟分析,验证该算法的跨流域一致适用性.
With gas-kinetic unified algorithm（ GKUA） based on Boltzmann equation for various flows regimes,rotational nonequilibrium effect is investigated in Rykov model,in which spin movement of gas molecules is described with moment of inertia.Numerical method of Boltzmann model equation involving rotational non-equilibrium effect is developed. Nitrogen shock wave structure,flows around a 2D blunt-head body and flows around a 3D tine bicone are simulated to validate the method in various flows regimes.
出处
《计算物理》
CSCD
北大核心
2014年第4期403-411,共9页
Chinese Journal of Computational Physics
基金
国家自然科学基金(91016027)资助项目
关键词
转动非平衡
统一算法
激波结构
钝头体
尖双锥
rotational non-equilibrium
GKUA
shock wave structure
blunt-head body
tine bicone
