Sponsor
This work was performed under the auspices ofthe U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. W-7405-ENG-48
Published In
Journal of Non-Equilibrium Thermodynamics
Document Type
Article
Publication Date
1-1-1998
Subjects
Fluid dynamics, Fluids -- Thermal properties, Fluid dynamics -- Mathematical models
Abstract
An improved self-consistent effective binary diffusion approximation for multicomponent diffusion was recently described [1]. Here we develop an analogous self-consistent effective binary interaction (SCEBI) approximation for simplifying multifluid dynamical descriptions in which each fluid is strongly coupled to the other fluids by pairwise frictional forces. The net drag force on each fluid is the summation of the drag forces due to each of the other fluids. This summation is approximated by a single term proportional to the velocity of the fluid in question relative to an appropriately weighted average velocity. This approximation permits an explicit numerical solution for the fluid velocities even when the drag terms are evaluated at the advanced time level to avoid explicit stability restrictions on the time step.
DOI
10.1515/jnet.1998.23.2.135
Persistent Identifier
http://archives.pdx.edu/ds/psu/7704
Citation Details
J.D. Ramshaw, "Self-Consistent Effective Binary Interaction Approximation For Strongly Coupled Multifluid Dynamics," J. Non-Equilib. Thermodyn. 23, 135 (1998)
Description
This is the publisher's final PDF. Article appears in Journal of Non-Equilibrium Thermodynamics (http://www.degruyter.com/view/j/jnet) and is copyrighted by Walter De Gruyter.
*At the time of publication John Ramshaw was affiliated with Lawrence Livermore National Laboratory