The Marginal stability in porous inhomogeneous media
St. I. Gheorghitza · Mathematical Proceedings of the Cambridge Philosophical Society · 1961
The breakdown of stability in a porous homogeneous medium of a fluid subject to a vertical temperature gradient was examined by Lapwood (4). However, in natural conditions the fluids move generally in inhomogeneous media and then it is important to deal with the problem of stability in these media; the purpose of this paper is to consider just such a problem.