Unsteady ternary mass transfer from a sphere in creeping flow
β 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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β¦ 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.
π SIMILAR VOLUMES
Abslract-An approximate solution of a steady-state problem of mass and heat transfer from a moving solid sphere at small finite P&let and Reynolds numbers is obtained. The case of a first-order chemical reaction on the sphere surface is considered. The problem is solved by means of matching inner an
## Abstract Mass transfer coefficients from 1/2βin. spheres of benzoic and cinnamic acids and 2βnapthol to water were measured in the high Reynolds number region of 600 to 140,000. Previous data for liquids extended only to a Reynolds number of 11,000. Three separate and approximately parallel line