A test of the modified Enskog theory for self-diffusion

作者: J.M. Kincaid , R.-F. Tuo , M. Lopez de Haro

DOI: 10.1080/00268979400100561

关键词:

摘要: The method of molecular dynamics has been used to calculate the self-diffusion coefficient for a system particles whose pairwise additive interactions are governed by Lennard-Jones/spline potential, finite ranged modification Lennard-Jones potential. D calculated states nσ3 = 0·05, 0·1, 0·2, 0·3, 0·4, and 0·5, with k B T/e 2·0 (n is number density, T temperature, Boltzmann's constant, σ e length energy parameters potential). non-equilibrium calculations were made systems having N particles, 256, 500, 1372. was obtained extrapolating results ∞ limit. To evaluate modified Enskog theory (MET) we second third virial coefficients 0, dilute gas value D, numerical quadrature. thermal pressure T(δp/δT) n , which plays central role in MET, using dynamics...

参考文章(28)
T. G. Cowling, Sydney Chapman, David Park, The mathematical theory of non-uniform gases ,(1939)
John E. Straub, Analysis of the role of attractive forces in self-diffusion of a simple fluid Molecular Physics. ,vol. 76, pp. 373- 385 ,(1992) , 10.1080/00268979200101391
Leo Durbin, Riki Kobayashi, Diffusion of Krypton‐85 in Dense Gases The Journal of Chemical Physics. ,vol. 37, pp. 1643- 1654 ,(1962) , 10.1063/1.1733354
William W. Wood, Jerome J. Erpenbeck, On the linearity of the self-diffusion process Journal of Statistical Physics. ,vol. 27, pp. 37- 56 ,(1982) , 10.1007/BF01011738
J.P.J. Michels, N.J. Trappeniers, The self-diffusion coefficient in the gas phase at moderate densities, obtained by computer simulations Physica A-statistical Mechanics and Its Applications. ,vol. 90, pp. 179- 195 ,(1978) , 10.1016/0378-4371(78)90108-5
Eugene Helfand, Transport Coefficients from Dissipation in a Canonical Ensemble Physical Review. ,vol. 119, pp. 1- 9 ,(1960) , 10.1103/PHYSREV.119.1
Brad Lee Holian, D. J. Evans, Shear viscosities away from the melting line: A comparison of equilibrium and nonequilibrium molecular dynamics Journal of Chemical Physics. ,vol. 78, pp. 5147- 5150 ,(1983) , 10.1063/1.445384
David M. Heyes, Self-diffusion and shear viscosity of simple fluids. A molecular-dynamics study Journal of the Chemical Society, Faraday Transactions. ,vol. 79, pp. 1741- 1758 ,(1983) , 10.1039/F29837901741
J.P.J. Michels, N.J. Trappeniers, Molecular-dynamical calculations of the self-diffusion coefficient below the critical density Chemical Physics Letters. ,vol. 33, pp. 195- 200 ,(1975) , 10.1016/0009-2614(75)80136-9