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Evolution of a condensation surface in a porous medium near the instability threshold
A. T. Il'icheva, G. G. Tsypkinb a Steklov Mathematical Institute of Russian Academy of Sciences, ul. Gubkina 8, Moscow, 119991 Russia
b Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences, pr. Vernadskogo 101-1, Moscow, 119526 Russia
Abstract:
We consider the dynamics of a narrow band of weakly unstable and weakly nonlinear perturbations of a plane phase transition surface separating regions of soil saturated with water and with humid air; during transition to instability, the existing stable position of the phase transition surface is assumed to be sufficiently close to another phase transition surface that arises as a result of a turning point bifurcation. We show that such perturbations are described by a Kolmogorov–Petrovskii–Piskunov type equation.
Received: September 4, 2017
Citation:
A. T. Il'ichev, G. G. Tsypkin, “Evolution of a condensation surface in a porous medium near the instability threshold”, Modern problems and methods in mechanics, Collected papers. On the occasion of the 110th anniversary of the birth of Academician Leonid Ivanovich Sedov, Trudy Mat. Inst. Steklova, 300, MAIK Nauka/Interperiodica, Moscow, 2018, 86–94; Proc. Steklov Inst. Math., 300 (2018), 78–85
Linking options:
https://www.mathnet.ru/eng/tm3856https://doi.org/10.1134/S0371968518010065 https://www.mathnet.ru/eng/tm/v300/p86
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Abstract page: | 195 | Full-text PDF : | 42 | References: | 31 | First page: | 5 |
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