Solution of porous medium type systems by linear approximation schemes |
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Authors: | Willi Jäger Jozef Ka?ur |
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Institution: | (1) Sonderforschungsbereich 123, Universität Heidelberg, Im Neuenheimer Feld 294, W-6900 Heidelberg, Federal Republic of Germany;(2) Institute of Applied Mathematics, Komensky Univerzity, Mlynska dolina, 84215 Bratislava, CSFR |
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Abstract: | Summary The convergence of semi-discrete and discrete linear approximation schemes is analysed for nonlinear degenerate parabolic systems of porous medium type. The enthalpy formulation and variational technique are used. The semi-discretization used reduces the original parabolic P.D.E. to linear elliptic P.D.E. The algebraic correction arising from nonlinearities is treated by Newton-like iterations in finite steps. Some numerical experiments are discussed and compared with the analytical solutions.Supported by the Alexander von Humboldt-Foundation in 1989, and by SFB 123, University Heidelberg |
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Keywords: | 76S05 65N10 |
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