Abstract
We consider a rather general class of singular parabolic problems; multidimensional two-phase Stefan problem and porous-medium equation involving additional nonlinearities are included. We analyze an approximation scheme consisting in a regularization procedure and discretization by means ofC °-piecewise linear finite elements in space and backward-differences in time. We prove severalL β-error estimates for the various unknowns, wherep depends on the problem. As a by-product of our technique, we obtain an optimalL 2-error estimate for enthalpy.
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This work was supported by “Consejo Nacional de Investigaciones Cientificas y Técnicas” of Argentina.
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Nochetto, R.H. Error estimates for multidimensional singular parabolic problems. Japan J. Appl. Math. 4, 111–138 (1987). https://doi.org/10.1007/BF03167758
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DOI: https://doi.org/10.1007/BF03167758