Relating instabilities in gas-fluidized beds to those of single phase compressible flows

Jayati Johri, Benjamin J. Glasser

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The aim of this work is to understand the minimum physics that leads to density waves in a fluidized bed. Most previous models assume two inter-penetrating phases which leads to separate equations of motion for the fluid and solid phases. In this work, the two phase model has been simplified to a single phase one by assuming that the slip velocity between the solid and gas phases is a constant. In effect, the bed is modeled as a compressible fluid that is also acted upon by a density-dependent force. Continuation and bifurcation analysis are used in order to understand how the uniform solution loses stability and one dimensional traveling wave solutions are born. It is shown that the salient features of the instability of a gas-fluidized bed are captured by the basic physics of compressible flows.

Original languageEnglish (US)
Title of host publicationProceedings of the 2001 ASME Fluids Engineering Division Summer Meeting. Volume 1
Subtitle of host publicationForums
EditorsT.J. O Hern, T.J. O Hern
Pages359-364
Number of pages6
StatePublished - 2003
Event2001 ASME Fluids Engineering Division Summer Meeting - New Orleans, LA, United States
Duration: May 29 2001Jun 1 2001

Publication series

NameProceedings of the ASME Fluids Engineering Division Summer Meeting
Volume1

Other

Other2001 ASME Fluids Engineering Division Summer Meeting
CountryUnited States
CityNew Orleans, LA
Period5/29/016/1/01

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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