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Engineering Mathematics
Review of Viscous Flows
Review of Computational Fluid Mechanics

Particle Adhesion
Simulation Methods
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ME 437 The National Science Foundation
 Particle Adhesion
Van der Waals Force | JKR and Other Adhesion Models | Particle Adhesion & Removal | Effects of Charge | Effect of Humidity | Ultrasonic and Megasonic Cleaning

Effects of Charge

JKR Theory

There is a total energy UT of a system, where
(5)

where

UE is the elastically stored energy

UM is the mechanical energy associated with the applied load.

US is the total surface energy = wApa2

The JKR equation is given by:
(6)

Fundamental Assumptions of the JKR Theory

1.The deformations are elastic.
2.The contact radius is small compared to the particle radius.
3.All interactions are localized to within the contact region, i.e. there are no long-range interactions.


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