Author
Alhumairi, Mohammed Khudhair Abbas, Ertunç, Özgür
Publication Date
2018
Publication Place
-
Society of Thermal Engineers of Serbia
Subject
Lean premixed combustion, Active-grid turbulence, Flame location
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0354-9836
Record ID
194bc0d0-3ee7-41dd-85e3-8c4be62c6e69
Library Location
Mechanical Engineering
Date
2018
Notes
Ozyegin University ; Diyala University ; TÜBİTAK
Sample Text
Lean premixed combustion under the influence of active-grid turbulence was computationally investigated, and the results were compared with experimental data. The experiments were carried out to generate a premixed flame at a thermal load of 9 kW from a single jet flow combustor. Turbulent combustion models, such as the coherent flame model (CFM) and turbulent flame speed closure (TFC) model were implemented for the simulations performed under different turbulent flow conditions, which were specified by the Reynolds number based on Taylor’s microscale (Reλ), the dissipation rate of turbulence (ε) and turbulent kinetic energy (k). This study shows that the applied turbulent combustion models differently predict the flame topology and location. However, similar to the experiments, simulations with both models revealed that the flame moves toward the inlet when turbulence becomes strong at the inlet, that is, when Reλ at the inlet increases. The results indicated that the flame topology and location in the coherent flame model were more sensitive to turbulence than those in the turbulent flame speed closure model. The flame location behavior on the jet flow combustor significantly changed with the increase of Reλ.
DOI
10.2298/TSCI170503100A
Cilt
22
