Collect. Czech. Chem. Commun.
1981, 46, 2967-2982
https://doi.org/10.1135/cccc19812967
Natural convective diffusion to a sphere
Arnošt Kimla and Jiří Míčka
Department of Mathematics, Prague Institute of Chemical Technology, 166 28 Prague 6
Abstract
The problem of natural convective diffusion to a sphere was solved both analytically for the asymptotic case Gr.Sc → ##h and numerically for values of the product Gr.Sc from about 1 000 to 20 000. Evaluation of numerical results gave basic characteristics of the velocity profile and the form of the diffusion layers. A formula for the total diffusion current to a sphere in the mentioned range of the product Gr.Sc was obtained by combining the analytical solution with the numerical results.
