电场对中性气体强化传热的数值分析  

Numerical Analysis on Electric Field Enhanced Transfer Process in Neutral Gas

作　　者：顾国锋[1] 郭平生[1] 

机构地区：[1]广西师范大学物理与电子工程学院,广西桂林541004

出　　处：《江西师范大学学报（自然科学版）》2007年第5期441-444,共4页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：973国家重点基础研究发展规划项目(G200026307)

摘　　要：用变步长数值积分法计算包含电场参数的碰撞偏向角χ,将数值计算结果代入约化碰撞积分Ω(2,2)*的公式进行数值计算,得到约化碰撞积分Ω(2,2)*随电场参数δ变化的数值关系.计算结果表明:当温度较低时,约化碰撞积分Ω(2,2)*随电场参数δ的变化明显,而且对每一个给定的约化温度T*,均存在一个电场参数δm,使约化碰撞积分Ω(2,2)*取最小值,对应的热导系数κ(1)取最大值,从而实现中性气体的强化传热.The angle of deflection of the relative velocity vector is calculatedwith numerical integration with variable pitch,and the reduced collision integrals Ω（2,2）＊ is calculated with numerical method.The numerical relation between the reduced collision integrals Ω（2,2）＊ and electric field parameter δ is obtained.The result shows that Ω（2,2）＊ changes obviously with δ when the gas temperature is low,that there is a number δm,and Ω（2,2）＊（δm） is smallest for every reduced temperature T＊,thermal conductivity coefficient κ（1）（δm） is largest,and the enhanced transfer process is realized.

关 键 词：变步长数值积分法 碰撞积分 电场参数 热导系数 强化传热 

分 类 号：O551.3[理学—热学与物质分子运动论]