Computational investigation of a swirled premixed burner using hybrid RANS-LES method
Notes on Numerical Fluid Mechanics and Multidisciplinary Design, cilt.137, ss.243-254, 2018 (Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 137
- Basım Tarihi: 2018
- Doi Numarası: 10.1007/978-3-319-70031-1_20
- Dergi Adı: Notes on Numerical Fluid Mechanics and Multidisciplinary Design
- Derginin Tarandığı İndeksler: Scopus
- Sayfa Sayıları: ss.243-254
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
High turbulent swirling reacting flow is investigated in a swirled premixed burner using hybrid RANS-LES method. The hybrid method is the Detached Eddy Simulation (DES) and it is combined with the Finite-Rate/Eddy Dissipation (FR/EDM) combustion model to treat turbulence-chemistry interaction. The instantaneous flow fields are well captured by DES and the premixed flame is well reproduced by FR/EDM. It is shown that DES is capable to reproduce the experimental profiles of the mean axial velocity and temperature. Phase-angle analysis of the instantaneous flow field shows the presence of large-scale coherent structures. Q-criterion is used to visualize the 3D behaviour of the structures; it is found that the unsteady flow contains a Precessing Vortex Core (PVC) and Secondary Outer Vortex (SOV).