Particle Deposition Mechanisms: Impaction
Impaction of Non-Stokesian Particles
The equation of motion of a particle is given as
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(10)
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where
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(11)
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and is a drag
coefficient. Equation (10) may be restated in non-dimensional form as
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(12)
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Numerical solutions for inviscid flows around cylinders and spheres were
obtained by Brun et al. (1955) and Dorsch et al. (1955).
The results depend on Stk and parameter P given as
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(13)
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where the particle Reynolds number is defined as
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(14)
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Variations of capture efficiency with Stokes number for different values
of P were given by Frielander (2000). See also Figure 1 (next page). |