液体的粘度与导热系数间的关系

将流体粘度和导热系数的自由体积模型与平衡性质的统计力学理论相结合,导出用液体蒸发潜热表示的关联液体粘度与导热系数的基本方程。对30种有代表性的物质(354个点)的平均相对关联误差为3.56％。应用蒸发潜热与温度的关系式,进一步得到以温度表示的关联上述两种传递性质的方程,对30种物质的关联误差为3.24％。

Correlation of Liquid Viscosity with Thermal Conductivity

Based on the revised free volume models for fluid viscosity and thermal conductivity and the statistical thermodynamic theory for equilibrium properties, an equation which correlates liquid viscosity with thermal conductivity by virtue of heat of vaporization has been proposed. This equation has been used to correlate the transport properties for 30 diverse substances, and the grand absolute average deviation(AAD) is 3.56 per cent for 354 data points. Then a correlation of liquid viscosity with thermal conductivity, which contains only temperature as a variable, is proposed by using the Watson equation for heat of vaporization. The correlation yields an AAD of 3.24 per cent for 30 substances.