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Title:Numerical Simulation of Turbulent Particle Diffusion
Author(s):Bocksell, Todd Leslie
Doctoral Committee Chair(s):Loth, Eric
Department / Program:Aerospace Engineering
Discipline:Aerospace Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Aerospace
Abstract:To accurately simulate particles in wall-bounded flows with the CRW model, a modified Markov chain based on a normalized velocity fluctuation was found to be important to avoid unphysical wall-ward particle fluxes. Also, the incremental drift velocity for the Markov chain (required for inhomogeneous turbulent flows) was extended to include effects of particle inertia and virtual mass to enable simulation for a wide range of Stokes numbers. The CRW results with the finite Stokes incremental drift velocity and the modified Markov chain agreed well the DNS results for long-time diffusion once effects of anisotropy in turbulent kinetic energy, integral time scale, and integral length scale were included.
Issue Date:2004
Description:198 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004.
Other Identifier(s):(MiAaPQ)AAI3130882
Date Available in IDEALS:2015-09-25
Date Deposited:2004

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