采用双分布函数格子Boltzmann方法的直流氩等离子体流动与传热分析  

Analysis of Flow and Heat Transfer in DC Argon Plasma by Using Double Distribution Lattice Boltzmann Method

作　　者：金英俊[1] 罗康[1] 易红亮[1] 谈和平[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《工程热物理学报》2016年第4期830-834,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51421063)

摘　　要：本文采用双分布函数格子Boltzmann方法(DDF-LB)模拟了直流氩电弧等离子体中的流动与传热问题。针对非局域热平衡状态下热等离子体中的原子、离子和电子三种组分,推导给出了不同组分的格子Boltzmann方程,通过耦合迭代求解得到各组分的温度和速度分布。文中采用随温度变化的松弛时间用以提高数值计算的稳定性。通过将本文的计算结果与文献结果进行比较,验证了DDF-LB方法求解等离子体中能量输运问题的稳定性和数值精度。The present work is aimed to simulate the thermal and fluid dynamical behavior of direct current argon plasma by using double distribution function lattice Boltzmann method（DDF-LBM）.The plasma consists of three components（electrons,ions and atoms）,and considered to be in non-local thermodynamic equilibrium during simulation.Multi-component lattice Boltzmann equations were constructed for the flow and energy fields.Temperature-dependent rescaling coefficients were used to enhance the numerical stability of the model.Numerical performance of the DDF-LB model was then validated by comparing the present results with values calculated by the other method and experimental data.

关 键 词：非局域热平衡态 氩等离子体 变松弛时间 双分布函数 格子BOLTZMANN方法 

分 类 号：TK123[动力工程及工程热物理—工程热物理]