A zonal Galerkin-free POD model for incompressible flows - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles Journal of Computational Physics Year : 2018

A zonal Galerkin-free POD model for incompressible flows

Abstract

A domain decomposition method which couples a high and a low-fidelity model is proposed to reduce the computational cost of a flow simulation. This approach requires to solve the high-fidelity model in a small portion of the computational domain while the external field is described by a Galerkin-free Proper Orthogonal Decomposition (POD) model. We propose an error indicator to determine the extent of the interior domain and to perform an optimal coupling between the two models. This zonal approach can be used to study multi-body configurations or to perform detailed local analyses in the framework of shape optimisation problems. The efficiency of the method to perform predictive low-cost simulations is investigated for an unsteady flow and for an aerodynamic shape optimisation problem.
Fichier principal
Vignette du fichier
article.pdf (14.37 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01668546 , version 1 (09-10-2018)

Identifiers

Cite

Michel Bergmann, Andrea Ferrero, Angelo Iollo, Edoardo Lombardi, Angela Scardigli, et al.. A zonal Galerkin-free POD model for incompressible flows. Journal of Computational Physics, 2018, 352, pp.301 - 325. ⟨10.1016/j.jcp.2017.10.001⟩. ⟨hal-01668546⟩
278 View
307 Download

Altmetric

Share

Gmail Facebook X LinkedIn More