Velocity fluctuations in a low-Reynolds-number fluidized bed

Citation:

Tee, S. - Y. ; Mucha, P. J. ; Brenner, M. P. ; Weitz, D. A. Velocity fluctuations in a low-Reynolds-number fluidized bed. Journal of Fluid Mechanics 2008, 596, 467-475. Copy at http://www.tinyurl.com/lns889e
2008_jfluidmech_tee.pdf141 KB

Abstract:

The velocity fluctuations of particles in a low-Reynolds-number fluidized bed have important similarities and differences with the velocity fluctuations in a low-Reynolds-number sedimenting suspension. We show that, like sedimentation, the velocity fluctuations in a fluidized bed are described well by the balance between density fluctuations due to Poisson statistics and Stokes drag. However, unlike sedimentation, the correlation length of the fluctuations in a fluidized bed increases with volume fraction. We argue that this difference arises because the relaxation time of density fluctuations is completely different in the two systems.

Notes:

Times Cited: 6

Last updated on 04/07/2014