Active thermal convection in vibrofluidized granular systems

Journal Article (Journal Article)

We present a granular-hydrodynamic model that captures the essence of convection in a fully vibrofluidized granular system. The steady temperature distribution is solved analytically. Numerical simulation shows that the convection always develops through a supercritical bifurcation, with its energy about 5% of the random (heat) one. A comparison calculation is performed for a normal fluid. The convection roll, or an active roll as we call it, has an angular velocity gradient from its interior to exterior. We conclude that active rolls are universal.

Full Text

Duke Authors

Cited Authors

  • Miao, G; Huang, K; Yun, Y; Wei, R

Published Date

  • August 1, 2004

Published In

Volume / Issue

  • 40 / 3

Start / End Page

  • 301 - 304

International Standard Serial Number (ISSN)

  • 1434-6028

Digital Object Identifier (DOI)

  • 10.1140/epjb/e2004-00277-7

Citation Source

  • Scopus