Author(s)

B. Foudin & B. Caussade

Abstract

Prediction of mass transfer on a moving non oscillating spheroidal drop of clean water B. Foudin, B. Caussade cfe To^/o^e, [/J?^ a^ CVWZ.S', f ro/esse^r CamzV/e ABSTRACT Numerical investigation of absorption into a moving spheroidal water drop (supposedly nonoscillating to simplify the problem) at terminal velocity using a finite difference method for Re=100-400 and aspect ratio (b/a) =0.70-0.97 is reported The ettect of deformation from spherical to spheroidal shape on mass transfer have been studied. The main conclusion is that any change in aspect ratio of the spheroid will cause an important variation on mass transfer rate; the more the oblateness of the drop becomes important, the more the transfer is enhanced. INTRODUCTION A better knowledge of gas absorption mechanisms by water drops is needed to understand scavenging of trace gases in clouds, rain and wet scrubbers. Our literature search has shown that theoritical approaches are inconclu

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