摘要
Shearing stresses and velocity distributions of quantum fluid helium at different temperatures flowing in the nano-channel were obtained by molecular dynamics simulation.The kinematic viscosities of quantum fluid helium in different temperature and density ranges could be calculated by the expression describing the relationship between shearing stress and velocity distribution.LJ model and QFH potential function were used to perform the MD simulation for two molecular systems with different sizes.The results showed that the simulation process with the quantum effect considered needed much time to obtain steady state.
Shearing stresses and velocity distributions of quantum fluid helium at different temperatures flowing in the nano-channel were obtained by molecular dynamics simulation.The kinematic viscosities of quantum fluid helium in different temperature and density ranges could be calculated by the expression describing the relationship between shearing stress and velocity distribution.LJ model and QFH potential function were used to perform the MD simulation for two molecular systems with different sizes.The results showed that the simulation process with the quantum effect considered needed much time to obtain steady state.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2007年第12期3036-3040,共5页
CIESC Journal
基金
"国际科技合作重点项目计划"(基础研究部分)
上海市科委重大项目(2004CB720703
03DZ14014)
关键词
分子动力学
量子流体
氦
黏度
量子效应
molecular dynamics
quantum fluid
helium
viscosity
quantum effect
