Fluctuating hydrodynamics and diffusion in amorphous solids

Das, Shankar P. ; Schilling, Rolf (1994) Fluctuating hydrodynamics and diffusion in amorphous solids Physical Review E, 50 (2). pp. 1265-1273. ISSN 1063-651X

Full text not available from this repository.

Official URL: http://link.aps.org/doi/10.1103/PhysRevE.50.1265

Related URL: http://dx.doi.org/10.1103/PhysRevE.50.1265


The fluctuating hydrodynamic description for an isotropic fluid is extended to include the displacement field u, reflecting the freezing of the local structures in an amorphous solid. The fluctuating nonlinear equations for the set of hydrodynamic variables including u has been obtained. The role of u is manifested through its longitudinal part, i.e., ∇·u, in terms of which we define the variable c(x,t). It refers to the diffusion of the free volume or vacancies, signifying configurational rearrangements in the amorphous solid. The analysis here shows that one recovers the earlier result obtained by Das and Mazenko [Phys. Rev. A 34, 2265 (1986)] for mode coupling models of a glass transition, where the time scales associated with the relaxation of the density fluctuations and that of the vacancy diffusion can be comparable.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:8669
Deposited On:28 Oct 2010 11:07
Last Modified:31 May 2011 04:30

Repository Staff Only: item control page