Space-time FR-DG discretization delivers fully-discrete entropy stability for arbitrary quadrature, recovers DG/FR/SD schemes through correction parameter c, and shows p+1 or p convergence with up to 70% cost reduction.
Chan, Skew-symmetric entropy stable modal discontinuous galerkin formulations, Journal of Scien- tific Computing 81 (1) (2019) 459–485
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A Space-time Approach to Entropy-Stable Discontinuous Galerkin and Flux Reconstruction
Space-time FR-DG discretization delivers fully-discrete entropy stability for arbitrary quadrature, recovers DG/FR/SD schemes through correction parameter c, and shows p+1 or p convergence with up to 70% cost reduction.