GRADIENT DRIVEN FLOW: LATTICE GAS, DIFFUSION EQUATION AND MEASUREMENT SCALES

R. B. Pandey (), Warren T. Wood and J. F. Gettrust
Additional contact information
R. B. Pandey: Naval Research Laboratory, Stennis Space Center, MS 39529, USA;
Warren T. Wood: Naval Research Laboratory, Stennis Space Center, MS 39529, USA
J. F. Gettrust: Naval Research Laboratory, Stennis Space Center, MS 39529, USA

International Journal of Modern Physics C (IJMPC), 2001, vol. 12, issue 02, 273-279

Abstract: Tracer diffusion and fluid transport are studied in a model for a geomarine system in which fluid constituents move from regions of high to low concentration. An interacting lattice gas is used to model the system. Collective diffusion of fluid particles in lattice gas is consistent with the solution of the continuum diffusion equation for the concentration profile. Comparison of these results validates the applicability and provides a calibration for arbitrary (time and length) units of the lattice gas. Unlike diffusive motion in an unsteady-state regime, both fluid and tracer exhibit a drift-like transport in a steady-state regime. The transverse components of fluid and tracer displacements differ significantly. While the average tracer motion becomes nondiffusive in the long time regime, the collective motion exhibits an onset of oscillation.

Keywords: Diffusion; Fick's Law (search for similar items in EconPapers)
Date: 2001
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0129183101001687
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:ijmpcx:v:12:y:2001:i:02:n:s0129183101001687

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0129183101001687

Access Statistics for this article

International Journal of Modern Physics C (IJMPC) is currently edited by H. J. Herrmann

More articles in International Journal of Modern Physics C (IJMPC) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().