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Surrogate model with conservative error measure for the stagnation heat flux in atmospheric entry flows

par Cortesi, Andrea;Magin, Thierry ;Congedo, Pietro Marco
Editeur scientifique Papadrakakis, Manolis;Papadopoulos, Vasilios
Référence 1st ECCOMAS Thematic Conference on Uncertainty Quantification in Computational Sciences and Engineering(1: 2015-05-25: Hersonissos), National Technical University of Athens, page (691-701)
Publication Publié, 2015

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Résumé :

This paper proposes the application of a conservative global error measure estimation to a kriging metamodel of the stagnation pressure and heat flux in the context of the atmospheric reentry of the EXPERT vehicle. In particular, a model based method and a generalized cross validation technique are compared to the actual root mean squared error in order to check whether the estimation is conservative. Furthermore, the quality of kriging metamodeling is compared to the one of classical polynomial chaos response surface by comparing their root mean squared errors.