Üniversitemiz öğretim üyelerinden Prof. Dr. Yusuf Özyörük’ün yazarları arasında bulunduğu “Experiences with two detached eddy simulation approaches through use of a high-order finite volume solver” başlıklı makale International Journal for Numerical Methods in Fluids’de yayınlandı.
In the present study, two advanced detached eddy simulation (DES) approaches, shear-layer-adapted delayed DES and zonal DES in mode II, which are known to help transition from RANS to LES mode, are employed in various flow problems in conjunction with a high-order finite volume solver. The numerical scheme, being only applicable on structured grids, has low-dissipation and low-dispersion features. Such features benefit mostly in the LES mode, minimizing the interference of numerical diffusion with subgrid eddy viscosity. First, corresponding subgrid models are validated via decaying homogeneous turbulence benchmark case. Then, a channel flow problem is chosen to examine these models in attached flow situations. Finally, flow around an airfoil at low Reynolds number is solved using the shear-layer-adapted delayed DES approach only, in an aim to obtain trailing-edge noise spectrum at an observer location. Despite some log-layer mismatch over turbulent boundary layers, which is typical of most DES methods, the combined application of high-resolution numerical method and advanced DES approaches, which are implemented on a stabilized Spalart-Allmaras turbulence model, shows merit in resolution of turbulence in regions of interest.
Cengiz, K., & Özyörük, Y. (2020). Experiences with two detached eddy simulation approaches through use of a high-order finite volume solver. International Journal for Numerical Methods in Fluids, 92(8), 899-921. doi:10.1002/fld.4811
Makaleye erişim için: https://onlinelibrary.wiley.com/doi/abs/10.1002/fld.4811
Prof. Dr. Yusuf Özyörük |
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| ozyoruk@metu.edu.tr | Scopus Yazar Kimliği: 6602100734 |
| Yazar Hakkında |
Anahtar sözcükler:
detached-eddy simulation; low dispersion; low dissipation; shear-layer-adaptive DDES; ZDES
Diğer Yazarlar:
Cengiz K. (ODTÜ)
Ek Bilgiler:
TÜBİTAK, 1001/112M106Funding by TÜBİTAK (the Scientific and Technological Research Council of Turkey) is gratefully acknowledged under the 1001 program (grant no.112M106). The authors are thankful to METU Center for Wind Energy (RÜZGEM) as well as TUBİTAK ULAKBİM High Performance and Grid Computing Center (TRUBA resources) for HPC the resources provided. The authors also thank Wybe Rozema for supplying the LES data and Prof. Young J. Moon for his valuable advice.
