A finite element discretization for two-dimensional MHD is described. The elements are triangles with piecewise linear basis functions. The main computational difficulty is the accurate calculation of the current. The most effective solution is to employ a current-vorticity advection formulation of
An Error Indicator Monitor Function for an r-Adaptive Finite-Element Method
โ Scribed by Weiming Cao; Weizhang Huang; Robert D. Russell
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 822 KB
- Volume
- 170
- Category
- Article
- ISSN
- 0021-9991
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โฆ Synopsis
An r -adaptive finite-element method based on moving-mesh partial differential equations (PDEs) and an error indicator is presented. The error indicator is obtained by applying a technique developed by Bank and Weiser to elliptic equations which result in this case from temporal discretization of the underlying physical PDEs on moving meshes. The construction of the monitor function based on the error indicator is discussed. Numerical results obtained with the current method and the commonly used method based on solution gradients are presented and analyzed for several examples.
๐ SIMILAR VOLUMES
This paper presents an adaptive ยฎnite element method to solve forced convective heat transfer. Solutions are obtained in primitive variables using a high-order ยฎnite element approximation on unstructured grids. Two general-purpose error estimators are developed to analyse ยฎnite element solutions and
An rh-method, which combines r-and h-methods, is proposed for cost-eective adaptive FE analysis in twodimensional linear elastic problems. Through various numerical test examples, the rh-method is compared with the h-method. From these examples it is concluded that the rh-method has the advantages o