Europhys. Lett.
Volume 61, Number 6, March 2003
Page(s) 749 - 755
Section Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics
Published online 01 March 2003
DOI: 10.1209/epl/i2003-00292-4
Europhys. Lett., 61 (6) , pp. 749-755 (2003)

Pattern formation in the inhomogeneous cooling state of granular fluids

S. K. Das and S. Puri

School of Physical Sciences, Jawaharlal Nehru University New Delhi, 110067, India

(Received 11 November 2002; accepted in final form 9 January 2003)

We present results from comprehensive event-driven (ED) simulations of nonlinear pattern formation in freely evolving granular gases. In particular, we focus on the morphologies of density and velocity fields in the inhomogeneous cooling state (ICS). We emphasize the strong analogy between the ICS morphologies and pattern formation in phase-ordering systems with a globally conserved order parameter.

45.70.Qj - Pattern formation.
64.75.+g - Solubility, segregation, and mixing; phase separation.
05.70.Ln - Nonequilibrium and irreversible thermodynamics.

© EDP Sciences 2003