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arXiv · 1807.02725

Numerical analysis of a discontinuous Galerkin method for Cahn-Hilliard-Navier-Stokes equations

Chen Liu·Beatrice Riviere
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Abstract

In this paper, we derive a theoretical analysis of an interior penalty discontinuous Galerkin methods for solving the Cahn-Hilliard-Navier-Stokes model problem. We prove unconditional unique solvability of the discrete system, obtain unconditional discrete energy dissipation law, and derive stability bounds with a generalized chemical energy density. Convergence of the method is obtained by proving optimal a priori error estimates. Our analysis of the unique solvability is valid for both symmetric and non-symmetric versions of the discontinuous Galerkin formulation.

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Chen Liu, Beatrice Riviere. 2018-07-07. Numerical analysis of a discontinuous Galerkin method for Cahn-Hilliard-Navier-Stokes equations. https://arxiv.org/abs/1807.02725

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