Accuracy and reliability of large-eddy simulation data in a really complex industrial geometry are invesigated. An original methodology based on a response surface for LES data is introduced. This surrogate model for the full LES problem is built using the Kriging technique, which enables a low-cost optimal linear interpolation of a restricted set of large-eddy simulation (LES) solutions. Therefore, it can be used in most realistic industrial applications. Using this surrogate model, it is shown that (i) optimal sets of simulation parameters (subgrid model constant and artificial viscosity parameter in the present case) can be found; (ii) optimal values, as expected, depend on the cost functional to be minimized. Here, a realistic approach, which takes into account experimental data sparseness, is introduced. It is observed that minimization of the error evaluated using a too small subset of reference data may yield a global deterioration of the results.
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February 2008
Research Papers
Sensitivity Analysis and Multiobjective Optimization for LES Numerical Parameters
J.-C. Jouhaud,
e-mail: jjouhaud@cerfacs.fr
J.-C. Jouhaud
Senior Researcher
Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)
, 42 Avenue Gaspard Coriolis, 31057 Toulouse Cedex, France
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P. Sagaut,
P. Sagaut
Professor
Institut Jean Le Rond d’Alembert,
e-mail: pierre.sagaut@upmc.fr
Université Pierre et Marie Curie
, 4 place Jussieu-case 162, F-75252 Paris Cedex 05, France
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B. Enaux,
B. Enaux
Ph.D student
Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)
, 42 Avenue Gaspard Coriolis, 31057 Toulouse Cedex, France
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J. Laurenceau
J. Laurenceau
Ph.D student
Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)
, 42 Avenue Gaspard Coriolis, 31057 Toulouse Cedex, France
Search for other works by this author on:
J.-C. Jouhaud
Senior Researcher
Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)
, 42 Avenue Gaspard Coriolis, 31057 Toulouse Cedex, Francee-mail: jjouhaud@cerfacs.fr
P. Sagaut
Professor
Institut Jean Le Rond d’Alembert,
Université Pierre et Marie Curie
, 4 place Jussieu-case 162, F-75252 Paris Cedex 05, Francee-mail: pierre.sagaut@upmc.fr
B. Enaux
Ph.D student
Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)
, 42 Avenue Gaspard Coriolis, 31057 Toulouse Cedex, France
J. Laurenceau
Ph.D student
Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS)
, 42 Avenue Gaspard Coriolis, 31057 Toulouse Cedex, FranceJ. Fluids Eng. Feb 2008, 130(2): 021401 (9 pages)
Published Online: January 25, 2008
Article history
Received:
June 11, 2007
Revised:
August 30, 2007
Published:
January 25, 2008
Citation
Jouhaud, J., Sagaut, P., Enaux, B., and Laurenceau, J. (January 25, 2008). "Sensitivity Analysis and Multiobjective Optimization for LES Numerical Parameters." ASME. J. Fluids Eng. February 2008; 130(2): 021401. https://doi.org/10.1115/1.2829602
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