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Engineering Mathematics
Review of Viscous Flows
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The National Science Foundation
ME 437 The National Science Foundation
 Viscous Flows
Navier-Stokes Equation, Vorticity, Stream Function | Exact Solutions | Drag on Spherical Particles | Creeping Flows | Nonspherical Particles

Creeping Flow Past a Sphere

Comparisons of Different Drag Laws

 Figures 4 and 5 compare various drag laws and their ranges of applicability. It is seen that the Stokes and Oseen drag are valid for very small Reynolds numbers. The empirical equation given by (35), however, covers a the entire range of Reynolds number up to about 1000.

Figure 4. Predictions of various models for drag coefficient for a spherical particle.

Figure 5. Predictions of various models for drag coefficient for a spherical particle.



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