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Free-form deformation, mesh morphing and reduced-order methods: enablers for efficient aerodynamic shape optimisation

TitleFree-form deformation, mesh morphing and reduced-order methods: enablers for efficient aerodynamic shape optimisation
Publication TypeJournal Article
Year of Publication2018
AuthorsSalmoiraghi, F, Scardigli, A, Telib, H, Rozza, G
JournalInternational Journal of Computational Fluid Dynamics
Volume32
Pagination233-247
Abstract

In this work, we provide an integrated pipeline for the model-order reduction of turbulent flows around parametrised geometries in aerodynamics. In particular, free-form deformation is applied for geometry parametrisation, whereas two different reduced-order models based on proper orthogonal decomposition (POD) are employed in order to speed-up the full-order simulations: the first method exploits POD with interpolation, while the second one is based on domain decomposition. For the sampling of the parameter space, we adopt a Greedy strategy coupled with Constrained Centroidal Voronoi Tessellations, in order to guarantee a good compromise between space exploration and exploitation. The proposed framework is tested on an industrially relevant application, i.e. the front-bumper morphing of the DrivAer car model, using the finite-volume method for the full-order resolution of the Reynolds-Averaged Navier–Stokes equations.

DOI10.1080/10618562.2018.1514115

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