Simulation of Radiative Transfer in Nonequilibrium Plasmas Containing N and O Species Based on the Approximate Collision-Radiative Method  

作　　者：HE Xin CHANG Sheng-Li DAI Sui-An YANG Jun-Cai 何新;常胜利;戴穗安;杨俊才(Department of Physics,National University of Defense Technology,Changsha 410073)

机构地区：[1]Department of Physics,National University of Defense Technology,Changsha 410073

出　　处：《Chinese Physics Letters》2013年第11期124-127,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 61007047;the Project of Development Program for National Defense Technology under Grant No 2011BAK03B07-3.

摘　　要：An approximate collision-radiative method is developed to calculate energy level populations of atoms and applied to simulate radiative transfer in a shock layer.Considering nonequilibrium plasmas with the electronic temperature below 20000 K,we introduce correction factors to the Saha–Boltzmann equation and simplify the master equation of the full collision-radiative model.Based on the method,the error of heat flux is smaller than 5%in a two-cell problem and smaller than 7%in the Stardust re-entry flow field compared with the correlated-k method.Furthermore,almost a factor of 2 is obtained in the improvement of computational efficiency compared with the nonequilibrium air radiation(NEQAIR)code.The results show that the present method is reliable and efficient.

关 键 词：METHOD layer RADIATIVE 

分 类 号：O17[理学—数学]