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Engineering Mathematics
Review of Viscous Flows
Review of Computational Fluid Mechanics

Particle Adhesion
Simulation Methods
Experimental Techniques
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The National Science Foundation
ME 437 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 |

Particle Deposition Mechanisms: Diffusion to a Cylinder

Fiber Efficiency/Filter Efficiency

Rearranging and integrating (23), it follows that

(24)

where L is the length of the filter. For   the following semi-empirical equation was suggested (Hinds, 1982):

Calculation Model

Filter Efficiency

Filter Efficiency


(25)

which correlates well with the data as shown in Figure 6. Note also that Equation (25) reduces to (21) as . For Re=0.1, the predictions of Equations (20) and (21) are shown in Figure 6 for comparison. It is seen that the prediction of Equation (20) for the diffusion limit is in good agreement with the result of (25) for small Peclet numbers. Similarly the prediction of Equation (21) for the interception limit asymptotes the empirical Equation (25) at large Peclet numbers.



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