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- W2742847878 abstract "In this paper we propose and analyze a mixed DG method and an HDG method for the stationary Magnetohydrodynamics (MHD) equations with two types of boundary (or constraint) conditions. The mixed DG method is based a recent work proposed by Houston et. al. for the linearized MHD. With two novel discrete Sobolev embedding type estimates for the discontinuous polynomials, we provide a priori error estimates for the method on the nonlinear MHD equations. In the smooth case, we have optimal convergence rate for the velocity, magnetic field and pressure in the energy norm, the Lagrange multiplier only has suboptimal convergence order. With the minimal regularity assumption on the exact solution, the approximation is optimal for all unknowns. To the best of our knowledge, this is the first a priori error estimates of DG methods for nonlinear MHD equations. In addition, we also propose and analyze the first divergence-free HDG method for the problem with several unique features comparing with the mixed DG method." @default.
- W2742847878 created "2017-08-17" @default.
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- W2742847878 date "2017-02-05" @default.
- W2742847878 modified "2023-09-24" @default.
- W2742847878 title "A Mixed DG method and an HDG method for incompressible magnetohydrodynamics" @default.
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- W2742847878 doi "https://doi.org/10.48550/arxiv.1702.01473" @default.
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