A Stochastic Model for Gravity Effects in Particle-Laden Turbulent Flows

[+] Author and Article Information
Z. Gao, F. Mashayek

Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, 842 West Taylor Street, Chicago, IL 60607

J. Fluids Eng 126(4), 620-625 (Sep 10, 2004) (6 pages) doi:10.1115/1.1778714 History: Received April 05, 2003; Revised February 13, 2004; Online September 10, 2004
Copyright © 2004 by ASME
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Grahic Jump Location
Schematic of fluid particle (F) and heavy particle (P) trajectories along with global (xyz) and local (ξηζ) coordinate systems
Grahic Jump Location
Results from the stochastic model without implementing the spatial correlation in isotropic flow. DNS results for corresponding cases are also shown for comparison.
Grahic Jump Location
Comparison of stochastic model predictions with DNS results in isotropic flow for (a) C1=2.73, (b) C1=4.1
Grahic Jump Location
Stochastic model predictions in homogeneous shear flow for various magnitudes of the gravitational force in (a) streamwise, (b) cross-stream and (c) spanwise directions. The figure also shows a comparison with DNS data in zero gravity.




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