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A conservative coupling numerical method for transient conjugate heat transfer

Radenac, Emmanuel and Gressier, Jérémie and Millan, Pierre and Giovannini, André A conservative coupling numerical method for transient conjugate heat transfer. (2005) In: International Conference on Computational Methods for Coupled Problems in Science and Engineering, 25-28 May 2005, Santorin, Greece .

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A conservative fluid mechanics-heat diffusion solver coupling method is presented. Optimal use of solvers can be achieved by coupling according to a cycle time step independent of classical numerical stability conditions. Solvers integrate their domains independently during a cycle. Between cycles, data are exchanged to compute a coupling boundary condition, which is imposed at the interface between the coupled domains. Conservativity is one of the main purposes of this coupling method. Consequently, Finite Volume method is used for the solvers. But during independent integrations by solvers, thermal flux losses happen at the interfaces between coupled domains. Conservative corrections are defined and used in order to maintain conservativity. But they can destabilize time integration. Stability criteria are established in order to achieve a robust conservative coupling, that eventually also improves integration accuracy.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Deposited By: Jeremie Gressier
Deposited On:24 Apr 2009 13:43

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