对于许多化工过程,流体的黏度是十分重要的参数,对其进行预测具有重要的意义.本文通过自由体积理论将扩散系数与剩余熵联系起来,同时又根据Stokes-Einstein方程,结合自扩散系数的Lennard-Jones链方程,获得了一个计算Lennard-Jones链流体黏度性质的方程.其计算值与分子模拟相比较,误差为4.48%;对于真实流体甲烷和乙烷,其黏度系数计算误差分别为5.59%和7.01%.
参考文献
| [1] | Kyunil Rah;Byung Chan Eu .The generic van der Waals equation of state and self-diffusion coefficients of liquids[J].The Journal of Chemical Physics,2001(6):2634-2640. |
| [2] | Liu HQ.;Silva CM.;Macedo EA. .Generalised free-volume theory for transport properties and new trends about the relationship between free volume and equations of state[J].Fluid Phase Equilibria,2002(1):89-107. |
| [3] | Ali SM .Scaling law of shear viscosity in atomic liquid and liquid mixtures[J].The Journal of Chemical Physics,2006(14):44504-1-44504-8-0. |
| [4] | Srivastava, R;Dwivedeie, DK;Khanna, KN .Scaling laws for transport coefficients of a hard sphere fluid[J].Journal of Molecular Liquids,2008(1/3):29-34. |
| [5] | Yang-Xin Yu;Guang-Hua Gao .Self-diffusion Coefficient Equation for Polyatomic Fluid[J].Fluid Phase Equilibria,1999(1):111-124. |
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