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Common‐refinement‐based data transfer between non‐matching meshes in multiphysics simulations
Author(s) -
Jiao Xiangmin,
Heath Michael T.
Publication year - 2004
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1147
Subject(s) - polygon mesh , multiphysics , computer science , matching (statistics) , computational science , norm (philosophy) , jump , finite element method , component (thermodynamics) , algorithm , mathematical optimization , mathematics , engineering , structural engineering , physics , computer graphics (images) , statistics , quantum mechanics , law , political science , thermodynamics
In multiphysics simulations using a partitioned approach, each physics component solves on its own mesh, and the interfaces between these meshes are in general non‐matching. Simulation data (e.g. jump conditions) must be exchanged across the interface meshes between physics components. It is highly desirable for such data transfers to be both numerically accurate and physically conservative. This paper presents accurate, conservative, and efficient data transfer algorithms utilizing a common refinement of two non‐matching surface meshes. Our methods minimize errors in a certain norm while achieving strict conservation. Some traditional methods for data transfer and related problems are also reviewed and compared with our methods. Numerical results demonstrate significant advantages of common‐refinement based methods, especially for repeated transfers. While the comparisons are performed with matching geometries, this paper also addresses additional complexities associated with non‐matching surface meshes and presents some experimental results from 3‐D simulations using our methods. Copyright © 2004 John Wiley & Sons, Ltd.