基于格子玻耳兹曼的等离子射流场数值模拟  

Numerical simulation of plasma jet by Lattice Boltzmann method

作　　者：王桂兰[1] 朱杰英[1] 张海鸥[1] 

机构地区：[1]华中科技大学塑性成形模拟及模具技术国家重点实验室

出　　处：《华中科技大学学报（自然科学版）》2003年第6期1-3,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目 (5 0 0 75 0 3 2 );国家高技术研究发展计划资助项目 (2 0 0 1AA42 115 0 )

摘　　要：采用格子玻耳兹曼 (LB)方法建立了等离子射流温度场和速度场的计算模型 ,与传统数值方法相比 ,LB方法具有直观的物理背景 .用正六边形 7 bit网格划分计算区域 ,通过选取适当的两套平衡分布函数和采用Chapman Enskog展开及多尺度技术导出了等离子射流场的宏观方程 ,并将计算结果与已有文献的实验结果进行了比较 ,验证了计算模型的有效性 ;计算结果表明 。A model for calculating the velocity and temperature field of plasma jet by Lattice Boltzmann (LB) method was established. Hexagonal 7 bit grid was employed to divide the calculating field. The macro functions were derived by selecting two opportune equilibrium distribution functions and by using Chapman Enskog expansion and multi scale expansion. The method was valid when the results were compared with those of the conventional ones. It was shown that the energy density and the plasma jet length can be increased by reducing flow turbulent viscosity at exit.

关 键 词：大气等离子射流 格子玻耳兹曼 数值模拟 

分 类 号：TK121[动力工程及工程热物理—工程热物理]