Gradient recovery based a posteriori error estimator for the adaptive direct discontinuous Galerkin method

In this paper, we propose a gradient recovery method for the direct discontinuous Galerkin (DDG) method. A quadratic polynomial is obtain by using the local discrete least-squares fitting to the gradient of numerical solution at certain sampling points. The recovered gradient is defined on a piecewi...

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Veröffentlicht in:	Calcolo 2023-03, Vol.60 (1), Article 18
Hauptverfasser:	Cao, Huihui, Huang, Yunqing, Yi, Nianyu
Format:	Artikel
Sprache:	eng
Schlagworte:	Errors Galerkin method Mathematics Mathematics and Statistics Numerical Analysis Polynomials Recovery Theory of Computation
Online-Zugang:	Volltext
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