| Titre : | Assessment of DES models for separated flow from a hump in a turbulent boundary layer (2010) |
| Auteurs : | Daniel C. Lyons, Auteur ; Leonard J. Peltier, Auteur ; Zajaczkowski, Frank J., Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Transactions of the ASME . Journal of fluids engineering (Vol. 131 N° 11, Novembre 2009) |
| Article en page(s) : | 09 p. |
| Note générale : | fluids engineering |
| Langues : | Anglais |
| Tags : | turbulent boundary layer ; hump ; detached-eddy simulation ; Reynolds-averaged Navier–Stokes modeling |
| Résumé : | Separated flow past a hump in a turbulent boundary layer is studied numerically using detached-eddy simulation (DES), zonal detached-eddy simulation (ZDES), delayed detached-eddy simulation (DDES), and Reynolds-averaged Navier–Stokes (RANS) modeling. The geometry is smooth so the separation point is a function of the flow solution. Comparisons to experimental data show that RANS with the Spalart–Allmaras turbulence model predicts the mean-field statistics well. The ZDES and DDES methods perform better than the DES formulation and are comparable to RANS in most statistics. Analyses motivate that modeled-stress depletion near the separation point contributes to differences observed in the DES variants. The order of accuracy of the flow solver ACUSOLVE is also documented. |
| En ligne : | http://fluidsengineering.asmedigitalcollection.asme.org/issue.aspx?journalid=122&issueid=27398 |
