Particle Technology and Fluidization

Numerical simulation of dilute turbulent gas-particle flow with turbulence modulation

  1. Akhil Rao1,*,
  2. Jennifer S. Curtis1,
  3. Bruno C. Hancock2,
  4. Carl Wassgren3

Article first published online: 31 MAY 2011

DOI: 10.1002/aic.12673

Issue

AIChE Journal

AIChE Journal

Volume 58, Issue 5, pages 1381–1396, May 2012

Additional Information

How to Cite

Rao, A., Curtis, J. S., Hancock, B. C. and Wassgren, C. (2012), Numerical simulation of dilute turbulent gas-particle flow with turbulence modulation. AIChE J., 58: 1381–1396. doi: 10.1002/aic.12673

Author Information

  1. 1

    Dept. of Chemical Engineering, University of Florida, Gainesville, FL 32611

  2. 2

    Pfizer Global Research and Development, Groton, CT 06340

  3. 3

    School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

*Dept. of Chemical Engineering, University of Florida, Gainesville, Florida 32611

Publication History

  1. Issue published online: 6 APR 2012
  2. Article first published online: 31 MAY 2011
  3. Accepted manuscript online: 5 MAY 2011 01:14PM EST
  4. Manuscript Revised: 28 APR 2011
  5. Manuscript Received: 8 FEB 2011

Funded by

  • National Science Foundation. Grant Number: 0749481
  • CPaSS industry members

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Keywords:

  • gas-solid flow;
  • turbulence modulation;
  • kinetic theory of granular flow

Abstract

A numerical study of a dilute turbulent gas-particle flow with inelastic collisions and turbulence modulation in an Eulerian framework is described. A new interpretation is provided for the interaction/coupling terms, based on a fluctuating energy transfer mechanism. This interpretation provides for a new robust closure model for the interaction terms with the ability to predict the turbulence dampening as well as the turbulence enhancement phenomenon. Further, the model developed herein is investigated along with a variety of other published closure models used for the interaction/coupling terms, particle drag, and solid stress. The models are evaluated against several sets of benchmark experiments for fully-developed, turbulent gas-solid flow in a vertical pipe. © 2011 American Institute of Chemical Engineers AIChE J, 2012

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