A shape-modified size correction for terminal settling velocity in the intermediate region

The terminal velocity of arbitrarily shaped sand particles was experimentally studied in the intermediate (or transition) Reynolds number region (2 < Re < 500). The equation relating terminal velocity and drag coefficients of spheres has been modified to correct for the deviation from roundnes...

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Bibliographic Details
Published in:Powder technology 1986-09, Vol.48 (1), p.59-65
Main Authors: Chin, A.D.Ah, Portz, J., Ward, M., Beddow, J.K., Vetter, A.F.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Liquid-liquid and fluid-solid mechanical separations
Settling
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Summary:The terminal velocity of arbitrarily shaped sand particles was experimentally studied in the intermediate (or transition) Reynolds number region (2 < Re < 500). The equation relating terminal velocity and drag coefficients of spheres has been modified to correct for the deviation from roundness by including a shape-modified size term using the morphological descriptor for radial variance called not-roundness. The advantage of this correlation is that all experimental data for non-spherical particles can be correlated by a single drag coefficient curve for spheres.
ISSN:0032-5910
1873-328X
DOI:10.1016/0032-5910(86)80065-1