混合气体分子速率分布函数的演化过程研究  

STUDY ON EVOLUTION OF MOLECULAR VELOCITY DISTRIBUTION FUNCTION OF MIXED GASES

作　　者：尹增谦[1] 武丽姣 王永杰[1] YIN Zengqian;WU Lijiao;WANG Yongjie(Department of Mathematics and Physics,North China Electric Power University,Baoding,Hebei 071003)

机构地区：[1]华北电力大学数理系,河北保定071003

出　　处：《物理与工程》2021年第4期8-17,共10页Physics and Engineering

摘　　要：利用蒙特卡罗方法,对混合气体分子速率分布函数的演化过程以及不同成分间的能量转移过程进行了研究。数值模拟结果表明,随着碰撞次数的增多,速率分布函数逐渐趋向于相应的麦克斯韦分布函数,而弛豫过程的快慢与各成分的分子质量有关。The evolution of molecular velocity distribution function and energy transfer between different components of mixed gas are investigated by Monte Carlo method.The results of numerical simulations show that the velocity distribution function gradually tends to the Maxwellian distribution with the increase of collision times,while the speed of relaxation process is related to the molecular masses.

关 键 词：麦克斯韦分布 蒙特卡罗方法 能量转移 

分 类 号：O552.3[理学—热学与物质分子运动论] O242[理学—物理]