Reference : Comparison of Data Transfer Methods between Meshes in the Frame of the Arbitrary Lagr...
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/2268/100497
Comparison of Data Transfer Methods between Meshes in the Frame of the Arbitrary Lagrangian Eulerien Formalism
English
Bussetta, Philippe mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire >]
Boman, Romain mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire >]
Ponthot, Jean-Philippe mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire >]
Nov-2011
Proceedings of "Fifth International Conference on Advanced COmputationalMethods in ENgineering"
No
No
International
Fifth International Conference on Advanced COmputationalMethods in ENgineering (ACOMEN 2011)
14 - 17 November 2011
Liège
Belgium
[en] Finite Elements Method ; Arbitrary Lagrangian Eulerien ; Transfer Method ; Finite Volumes ; Mortar Elements
[en] In nonlinear solid Mechanics, the Arbitrary Lagrangian Eulerian (ALE) formalism is a common way to avoid mesh distortion when very large deformations occur in the modelled process. Usually, the ALE resolution procedure is based on an “operator split”, the second part of which is a Data Transfer between two meshes sharing the same topology (same number of nodes and same number of element neighbours for each of them). Thanks to this interesting property, classical ALE transfer algorithms can bemuchmore optimised in terms of CPU time than the ones that are used in the frame of a complete remeshing. However, the resulting CPU-efficient transfer schemes suffer from two main drawbacks. The first one is a spurious crosswind diffusion coming from the corner fluxes that have been neglected. The second issue is the number of explicit transfer steps which may become very large when the element size decreases. In this paper, these classical ALE Data Transfer methods are compared to more general algorithms which do not make any assumption on the topology of both meshes.
the Walloon Region
the STIRHETAL project (WINNOMAT program, convention number 0716690)
http://hdl.handle.net/2268/100497

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