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Title: Forced convection mass transfer from spheroids
Author: Beg, Shafkat Ali
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1966
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Although a considerable amount of work has been carried out on transfer from spheres, comparatively little effort has been directed towards the study of transfer processes from other idealised drop shapes. Both theoretical and photographic evidence has indicated that the drops of a dispersed phase often assume non-spherical shapes when passing through a continuous phase. Frequently, oblate spheroidal shapes and shapes composed of spheroidal halves of different eccentricities have been observed. In order to obtain information on the effect of body shape on mass transfer, overall and local mass transfer rates were measured from naphthalene spheroids suspended in a wind tunnel (Schmidt number 2.4). Fifteen spheroidal shapes which included spheres, oblate spheroids, spheroids with composite halves and disks were employed in the study. The ratio of the minor to major axes of the spheroids ranged from 1:1 (sphere) to 1:4. The data obtained from one-hundred and fifty-six experimental runs for spheroids were best correlated by the use of Pasternak and Gauvin's characteristic dimension, defined as total surface area of the body divided by maximum perimeter normal to flow.
Supervisor: Cornish, A. R. H. Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available