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Partially-Averaged navier-stokes simulations of flows around two different ahmed bodies

Maryam Mirzaei (Institutionen för tillämpad mekanik, Strömningslära) ; Sinisa Krajnovic (Institutionen för tillämpad mekanik, Strömningslära) ; B. Basara
Computers and Fluids (0045-7930). Vol. 117 (2015), p. 273-286.
[Artikel, refereegranskad vetenskaplig]

The paper reports a study about the prediction of flows around simplified vehicles using Partially-Averaged Navier-Stokes (PANS). Numerical simulations are performed for two simplified vehicles: a slanted-back Ahmed body at Re. =. 30,000 and a squared-back Ahmed body at Re. =. 300,000. A comparison of the resolved and modeled physical flow scales is made with corresponding LES and experimental data for a better understanding of the performance of the PANS model. The PANS model is compared for coarse and fine grid resolutions and it is indicated that even a coarse-grid PANS simulation is able to produce fairly close flow predictions to those from a well-resolved LES simulation. The results indicate the possibility of improvement of the predictions by employing a finer grid resolution.

Nyckelord: Ahmed body , Large eddy simulation , LES , PANS , Partially averaged navier-stokes



Denna post skapades 2015-06-29. Senast ändrad 2015-08-14.
CPL Pubid: 219041

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära

Ämnesområden

Strömningsmekanik

Chalmers infrastruktur