Study of viscosity inhomogeneity in porous media

被引:66
|
作者
Akhmatskaya, E
Todd, BD
Daivis, PJ
Evans, DJ
Gubbins, KE
Pozhar, LA
机构
[1] CORNELL UNIV, SCH CHEM ENGN, ITHACA, NY 14853 USA
[2] AUSTRALIAN NATL UNIV, RES SCH CHEM, CANBERRA, ACT 0200, AUSTRALIA
[3] UKRAINIAN ACAD SCI, INST LOW TEMP PHYS & ENGN, UA-310164 KHARKOV, UKRAINE
来源
JOURNAL OF CHEMICAL PHYSICS | 1997年 / 106卷 / 11期
关键词
D O I
10.1063/1.473505
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The theory of transport in highly inhomogeneous systems, developed recently by Pozhar and Gubbins, and the nonequilibrium molecular dynamics (NEMD) technique are employed to study the viscosity of WCA fluids cofined in narrow slit pores of width 5.1 and 20 sigma at reduced densities rho sigma(3) of 0.422-0.713. Calculated quantities include the equilibrium and nonequilibrium density profiles, equilibrium pair correlation functions, how velocity profiles, and the viscosity profiles. NEMD simulation results are compared with the theoretical predictions. The agreement is good except for the region within one molecular diameter from the walls. The viscosity was found to vary with position across the pore. (C) 1997 American Institute of Physics.
引用
收藏
页码:4684 / 4695
页数:12
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