Document Type

Article

Publication Date

2-1-1997

Department

Computing

Abstract

When binary liquid mixtures are infused into various random porous media, past experiment have shown that different media affect the dynamic correlations of concentration fluctuations in different ways. Vycor glasses of relatively small pore size and dilute gels allow the exponential bulk mode to remain in the final ensemble average, but Vycor glasses of vary large pore size do not. We take this to mean that the relaxation time of the bulk mode is spatialIy homogeneous in the two former media but heterogeneous in the latter media. Thus we search for a heterogeneous dynamic mode with an Ising model. We find one, but it is not the hulk diffusion mode.

Publication Title

Physical Review E

Volume

55

Issue

2

First Page

2034

Last Page

2037

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