80 citations · 1.1k across the 77 of their papers we have counts for
6 papers · 1 filter
Perturbative Linearization of Reaction-Diffusion Equations
Sanjay Puri, Kay Joerg Wiese
We develop perturbative expansions to obtain solutions for the initial-value problems of two important reaction-diffusion systems, viz., the Fisher equation and the time-dependent…
Segregation of Granular Mixtures in a Rotating Drum
Sanjay Puri, Hisao Hayakawa
We formulate a phenomenological model for the segregation of binary mixtures of rough and smooth granular materials in a rotating drum. Our model successfully replicates a range of…
Phase Separation Kinetics in a Model with Order-Parameter Dependent Mobility
Sanjay Puri, Alan Bray, Joel Lebowitz
We present extensive results from 2-dimensional simulations of phase separation kinetics in a model with order-parameter dependent mobility. We find that the time-dependent structu…
Phase Ordering Kinetics with External Fields and Biased Initial Conditions
J. A. N. Filipe, A. J. Bray, S. Puri
The late-time phase-ordering kinetics of the O(n) model for a non-conserved order parameter are considered for the case where the O(n) symmetry is broken by the initial conditions…
Ordering Kinetics of Conserved XY Models
Sanjay Puri, A. J. Bray, F. Rojas
The zero-temperature ordering kinetics of conserved XY models in spatial dimensions and 3 is studied using cell dynamical simulations. The growth of the characteristic length…
A Singular Perturbation Analysis for \\Unstable Systems with Convective Nonlinearity
Oliver Schönborn, Sanjay Puri, Rashmi C. Desai
We use a singular perturbation method to study the interface dynamics of a non-conserved order parameter (NCOP) system, of the reaction-diffusion type, for the case where an extern…