Granular Gas: Vibrating Walls, Two-Peak Distribution and Hydrodynamics

TL;DR

This paper investigates how vibrating walls affect granular gases, causing a split in velocity distribution and requiring an adjusted hydrodynamic model for accurate description.

Contribution

It introduces a modified hydrodynamic framework that accounts for the two-peak velocity distribution caused by vibrating walls in granular gases.

Findings

Vibrating walls induce a two-peak velocity distribution in granular gases.

The modified hydrodynamic model explains the two-peak phenomenon.

The study enhances understanding of energy transfer in vibrated granular systems.

Abstract

Vibrating walls, used to maintain the temperature in a granular gas, modify the system strongly. Most conspicuously, the usual one-peak velocity distribution splits into two, asymmetrically positioned. A surgical repair of the usual hydrodynamic description is presented that provides an account for, and an understanding of, the situation.