【摘要】 用分子动力学模拟计算了微孔介质中流体氩在不同温度、不同密度和不同孔径下的剪切粘度.并根据Chapman-Enskog关于硬球流体传递性质的理论以及Heyes的关于Lennard-Jones流体粘度的表达式,提出了两个描述微孔介质中流体粘度的模型,该模型可以计算微孔中流体氩在不同状态下的粘度值.通过与计算机模拟值的比较,证明这两个微孔流体粘度模型是可用的.更多还原

【Abstract】 Equilibrium molecular dynamics simulations have been used to calculate the shear viscosity of fluid argon both in macrovolume system and in porous media at different temperatures,densities and pore widths.Simultaneously,based on the Chapman Enskog(CE) theory for the transport properties of hard sphere fluids and Heyes relationships which extend the CE theory to Lennard Jones fluids,two correlation models which can describe the viscosity of simple fluid in porous media are proposed as a function of the reduced temperature,density and pore width.The validity of the models is evaluated by comparing the calculated viscosity to the simulation data.更多还原