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Engineering Mathematics
Review of Viscous Flows
Review of Computational Fluid Mechanics
Review of Turbulence and Turbulence Modeling

Particle Adhesion
Colloids
Simulation Methods
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ME 637 The National Science Foundation
 Aerosols
Introduction to Aerosols | Drag, Lift Forces | Aerosol Kinetics | Virtual Mass, Basset Forces & BBO Equation | Nonspherical Particles | Brownian Motions | Particle Deposition Mechanisms | Electrodynamics | Aerosol Coagulation |

Aerosol Kinetics

Buoyancy Effects

For small particles in liquids, the buoyancy effect must be included. Thus Equation (1) is replaced by

(16)

where mf is the mass equivalent volume fluid given as

(17)

and ma is the apparent mass with ρƒ being the fluid density. For spherical particles, .

Keeping the same definition for particle relaxation time as given by Equation (3), Equation (2) may be restated as

(18)

The expression for the terminal velocity then becomes

(19)

Note that the Basset force and the memory effects are neglected in this analysis.



Dr. Goodarz Ahmadi | Turbulence & Multiphase Fluid Flow Laboratory | Department of Mechanical & Aeronautical Engineering
Copyright © 2002-2005 Dr. Goodarz Ahmadi. All rights reserved.
Potsdam, New York, 13699
ahmadi@clarkson.edu