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Unsteady ternary mass transfer from a sphere in creeping flow

✍ Scribed by Gheorghe Juncu


Publisher
Elsevier Science
Year
2005
Tongue
French
Weight
308 KB
Volume
44
Category
Article
ISSN
1290-0729

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✦ Synopsis


The transient mass transfer from a sphere with rigid surface into a surrounding fluid flow has been analysed for a ternary system. The concentrations inside the sphere are considered uniform. Steady, creeping flow is assumed around the sphere. The mass balance equations were solved numerically in spherical coordinates by a finite difference splitting method. The computations focused on the influence of the cross diffusion coefficients on the mass transfer rate at moderate Peclet numbers and different values of the Henry numbers and self-diffusivity rates. The occurrence on the sphere's surface of osmotic diffusion, diffusion barrier and reverse diffusion phenomena was also studied.


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