Spectral Element Approximation of the Hodge-⋆ Operator in Curved Elements

Conference paper
Part of the Lecture Notes in Computational Science and Engineering book series (LNCSE, volume 76)

Abstract

Mimetic approaches to the solution of partial differential equations (PDE’s) produce numerical schemes which are compatible with the structural properties – conservation of certain quantities and symmetries, for example – of the systems being modelled. Least Squares (LS) schemes offer many desirable properties, most notably the fact that they lead to symmetric positive definite algebraic systems, which represent an advantage in terms of computational efficiency of the scheme. Nevertheless, LS methods are known to lack proper conservation properties which means that a mimetic formulation of LS, which guarantees the conservation properties, is of great importance. In the present work, the LS approach appears in order to minimize the error between the dual variables, implementing weakly the material laws, obtaining an optimal approximation for both variables. The application to a 2D Poisson problem and a comparison will be made with a standard LS finite element scheme, see, for example, Cai et al. (J. Numer. Anal. 34:425–454, 1997).

Keywords

Spectral Element Spectral Element Method Constrain Minimization Problem Little Square Approach Curve Element 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Notes

Acknowledgements

The authors would like to acknowledge Foundation for Science and Technology (Portugal) for the funding given by the PhD grant SFRH/BD/36093/2007.

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Copyright information

© Springer Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Department of Aerodynamics, Faculty of Aerospace EngineeringTUDelftDelftThe Netherlands

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