NUMERICAL ANALYSIS OF DRAG COEFFICIENTS AND THE HEAT AND MASS TRANSFER OF SPHEROIDAL DROPS

Abstract

Numerical analyses of the drag coefficients and the heat and mass transfer from a spheroidal liquid drop under low mass flux conditions were made by use of a finite difference method for Re_p=1-200, Pr or Sc=0.5-2.0 and aspect ratio=0.3-2.0. The present numerical data were compared with existing experimental and numerical data and showed good agreement. The effect of deformation from spherical to spheroidal shape on drag coefficients and heat and diffusion fluxes of a spheroidal particle or a drop were studied. A new correlation for the effect of the aspect ratio (b/a) on heat and mass transfer of a spheroidal drop was proposed.