The work provides 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.

Free-form deformation, mesh morphing and reduced-order methods: enablers for efficient aerodynamic shape optimisation / Salmoiraghi, F.; Scardigli, A.; Telib, H.; Rozza, G.. - In: INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS. - ISSN 1061-8562. - 32:4-5(2018), pp. 233-247. [10.1080/10618562.2018.1514115]

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

Salmoiraghi, F.;Scardigli, A.;Rozza, G.
2018

Abstract

The work provides 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.
32
4-5
233
247
https://doi.org/10.1080/10618562.2018.1514115
https://arxiv.org/abs/1803.04688v2
Salmoiraghi, F.; Scardigli, A.; Telib, H.; Rozza, G.
File in questo prodotto:
File Dimensione Formato  
1803.04688.pdf

non disponibili

Tipologia: Documento in Post-print
Licenza: Non specificato
Dimensione 5.21 MB
Formato Adobe PDF
5.21 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11767/83718
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 27
  • ???jsp.display-item.citation.isi??? 21
social impact