Geodesic
Semi-discrete error estimates and implementation of a mixed method for the Stefan problem
Davis, Ch. B.1 ; Walker, Sh. W.2 
1 Department of Mathematics, Tennessee Tech University, 1 William L Jones Dr, Cookeville, TN 38505, USA.
2 Department of Mathematics, Louisiana State University, Baton Rouge, LA 70803-4918, USA.
ESAIM: Mathematical Modelling and Numerical Analysis , Tome 51 (2017) no. 6, pp. 2093-2126

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We analyze a dual formulation and finite element method for simulating the Stefan problem with surface tension (originally presented in [C.B. Davis and S.W. Walker, Int. Free Bound. 17 (2015) 427–464]). The method uses a mixed form of the heat equation in the solid and liquid (bulk) domains, and imposes a weak formulation of the interface motion law (on the solid-liquid interface) as a constraint. The computational method uses a conforming mesh approach to accurately capture the jump conditions across the interface. Preliminary error estimates are derived, under reduced regularity assumptions, for the difference between the time semi-discrete solution and the fully discrete solution over one time step. Moreover, details of the implementation are discussed including mesh generation issues. Several simulations of interface growth (in two dimensions) are presented to illustrate the method.

Reçu le :
Accepté le :
DOI : 10.1051/m2an/2017022
Classification : 65M60, 35K20
Keywords: Stefan problem, mixed method, energy stability, error estimate, interface motion, semi-implicit scheme, re-meshing, conforming mesh

Davis, Ch. B. 1 ; Walker, Sh. W. 2

1 Department of Mathematics, Tennessee Tech University, 1 William L Jones Dr, Cookeville, TN 38505, USA.
2 Department of Mathematics, Louisiana State University, Baton Rouge, LA 70803-4918, USA. 
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     title = {Semi-discrete error estimates and implementation of a mixed method for the {Stefan} problem},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {2093--2126},
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Davis, Ch. B.; Walker, Sh. W. Semi-discrete error estimates and implementation of a mixed method for the Stefan problem. ESAIM: Mathematical Modelling and Numerical Analysis , Tome 51 (2017) no. 6, pp. 2093-2126. doi: 10.1051/m2an/2017022

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