Zienkiewicz-Zhu's derivative patch recovery technique is analyzed for general quadrilateral finite elements. Under certain regular conditions on the meshes, the arithmetic mean of the absolute error of the recovered gradient at the nodal points is superconvergent for the second-order elliptic operat
A robust implementation of Zienkiewicz and Zhu's local patch recovery method
✍ Scribed by Labbé, P. ;Garon, A
- Book ID
- 102117882
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 440 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1069-8299
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This is the second in a series of two papers in which the patch recovery technique proposed by Zienkiewicz and Zhu [I-3] is analyzed. In the first paper [4], we have shown that the recovered derivative by the least-squares titting is superconvergent for the two-point boundary value problems. In the
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