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arXiv · 2104.08730

Mpemba effect in an anisotropically driven granular gas

Apurba Biswas·V. V. Prasad·R. Rajesh
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Abstract

We demonstrate the existence, as well as determine the conditions, of a Mpemba effect - a counterintuitive phenomenon where a hotter system equilibrates faster than a cooler system when quenched to a cold temperature - in anisotropically driven granular gases. In contrast to earlier studies of Mpemba effect in granular systems, the initial states are stationary, making it a suitable system to experimentally study the effect. Our theoretical predictions for the regular, inverse and strong Mpemba effects agree well with results of event-driven molecular dynamics simulations of hard discs.

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Apurba Biswas, V. V. Prasad, R. Rajesh. 2021-04-18. Mpemba effect in an anisotropically driven granular gas. https://doi.org/10.1209/0295-5075%2Fac2d54

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