A Modified Polynomial Preserving Recovery and Its Applications to A Posteriori Error Estimates |
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Authors: | Haijun Wu |
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Institution: | Department of Mathematics, Nanjing University, Jiangsu, 210093, China |
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Abstract: | A modified polynomial preserving gradient recovery technique is proposed. Unlike the polynomial preserving gradient recovery technique,the gradient recovered with the modified polynomial preserving recovery(MPPR) is constructed element-wise, and it is discontinuous across the interior edges.One advantage of the MPPR technique is that the implementation is easier when adaptive meshes are involved.Superconvergence results of the gradient recovered with MPPR are proved for finite element methods for elliptic b... |
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Keywords: | Adaptive finite element method superconvergence gradient recovery modified PPR |
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