Convection Currents in Porous Media. III. Extended Theory of the Critical Gradient
- 1 November 1950
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 21 (11) , 1177-1180
- https://doi.org/10.1063/1.1699561
Abstract
The theory of the critical gradient for onset of thermal convection in a fluid entrapped in a porous medium is extended to allow for the exponential dependence of viscosity upon temperature and for non‐linear vertical temperature‐distributions which characterize transients in heat flow. Although there are approximations in the mathematical treatment, the extended theory agrees rather well with experimental data, as the simple theory does not in certain instances. New experimental data are reported for the critical gradient, obtained largely with silicone fluids in unconsolidated sands.This publication has 4 references indexed in Scilit:
- Convection Currents in Porous Media: II. Observation of Conditions at Onset of ConvectionJournal of Applied Physics, 1949
- The cambridge philosophical society statement of accounts for the year ending 31 july 1947Mathematical Proceedings of the Cambridge Philosophical Society, 1948
- Convection Currents in a Porous MediumJournal of Applied Physics, 1945
- The interaction of light nuclei II-The binding energies of the nuclei H 1 3 and He 2 3Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1935