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MiS Preprint

On the Competition of Elastic Energy and Surface Energy in Discrete Numerical Schemes

Thomas Blesgen


The $\Gamma$-limit of certain discrete free energy functionals related to the numerical approximation of Ginzburg-Landau models is analysed when the distance $h$ between neighbouring points tends to zero. The main focus lies on cases where there is competition between surface energy and elastic energy. Two discrete approximation schemes are compared, one of them shows a surface energy in the $\Gamma$-limit. Finally, numerical solutions for the sharp interface Cahn-Hilliard model with linear elasticity are investigated. It is demonstrated how the viscosity of the numerical scheme introduces an artifical surface energy that leads to unphysical solutions.

MSC Codes:
82C26, 74N20, 74S20
viscosity of numerical schemes, free boundary value problems

Related publications

2007 Repository Open Access
Thomas Blesgen

On the competition of elastic energy and surface energy in discrete numerical schemes

In: Advances in computational mathematics, 27 (2007) 2, pp. 179-194