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基于MPCD方法计算流体的导热系数

A MPCD based method for calculating the thermal conductivity of the fluid
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摘要 为了计算更大尺度体系的导热系数,使用多粒子碰撞动力学(Multi-Particle Collision Dynamics,MPCD)方法模拟流体的运动。首先研究流体粗粒子质量、盒子尺寸、体系温度和旋转角度对导热系数计算结果的影响,然后采用MPCD方法计算Ar原子体系和水分子体系的导热系数,计算时间仅为3 min左右,相比分子动力学(Molecular Dynamics,MD)方法,大大减少了计算量。 In order to calculate the thermal conductivity of a larger scale system,Multi-Particle Collision Dynamics(MPCD)is applied to imitate the motion of fluid.By combining the influence of the fluid quality of coarse particles,the size of the box,the system temperature and the rotation angle of the calculation results,the thermal conductivity of Ar atoms system and the water molecule system are obtained by using the method of MPCD.The corresponding computational time is about 3 min,which is much better than that of the Molecular Dynamics(MD)method.
作者 李龙 王瑞金 朱泽飞 LI Long;WANG Ruijin;ZHU Zefei(School of Mechanical Engineering,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China)
出处 《杭州电子科技大学学报(自然科学版)》 2021年第2期78-82,共5页 Journal of Hangzhou Dianzi University:Natural Sciences
基金 国家自然科学基金资助项目(11572107)。
关键词 导热系数 多粒子碰撞动力学 Ar原子体系 分子动力学 thermal conductivity multi-particle collision dynamics Ar atomic system molecular dynamics
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