DOMAIN GROWTH IN A MULTIVARIABLE NONPOTENTIAL SYSTEM

We present a study of dynamical scaling and domain growth in a nonpote ntial system that models Rayleigh-Benard convection in a rotating cell . In d = 1, dynamical scaling holds, but the nonpotential terms modify the characteristic growth law with a crossover from logarithmic to li near in time. In d = 2 the nonpotential terms prevent coarsening for v alues of the angular rotation speed below the Kuppers-Lortz instabilit y. (C) 1998 Published by Elsevier Science B.V. All rights reserved.