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Modelling and Simulation in Engineering
Volume 2012, Article ID 495935, 13 pages
http://dx.doi.org/10.1155/2012/495935
Research Article

Parallel Mesh Adaptive Techniques for Complex Flow Simulation: Geometry Conservation

1GR-SCI-IAG, STI, EPFL, Station 9, 1015 Lausanne, Switzerland
2MOX, Department of Mathematics “F. Brioschi”, Politecnico di Milano, Piazza L. Da Vinci 32, 20133 Milano, Italy

Received 27 April 2012; Revised 16 October 2012; Accepted 22 October 2012

Academic Editor: Hing Kai Chan

Copyright © 2012 Angelo Casagrande et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Dynamic mesh adaptation on unstructured grids, by localised refinement and derefinement, is a very efficient tool for enhancing solution accuracy and optimising computational time. One of the major drawbacks, however, resides in the projection of the new nodes created, during the refinement process, onto the boundary surfaces. This can be addressed by the introduction of a library capable of handling geometric properties given by a CAD (computer-aided design) description. This is of particular interest also to enhance the adaptation module when the mesh is being smoothed, and hence moved, to then reproject it onto the surface of the exact geometry.