Modelling combustion in gas turbine combustors remains to be a challenge since several different physical phenomena interact in the process. One of the most important aspects of the combustion in a gas turbine combustor is the chemistry-turbulence interaction. In order to study the effect of the combustion and turbulence models, a dump combustor geometry is selected. Two combustion models namely, finite rate chemistry and flamelet based models, together with different turbulent models including LES 1eq k-model, RANS k-epsilon and k-omega models are implemented using both CFX and OpenFoam codes. The predicted temperature and velocity fields are compared to the existing experimental results. It is shown that different turbulence models behave very differently and there are large discrepancies between the experimental and predicted results. Some part of the discrepancies may be due to unknown heat losses through the combustor wall in the experiment.
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ASME Turbo Expo 2015: Turbine Technical Conference and Exposition
June 15–19, 2015
Montreal, Quebec, Canada
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5669-7
PROCEEDINGS PAPER
Investigation of Combustion in a Dump Combustor Using Different Combustion and Turbulence Models
Darioush G. Barhaghi,
Darioush G. Barhaghi
Siemens Industrial Turbomachinery AB, Finspong, Sweden
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Daniel Lörstad
Daniel Lörstad
Siemens Industrial Turbomachinery AB, Finspong, Sweden
Search for other works by this author on:
Darioush G. Barhaghi
Siemens Industrial Turbomachinery AB, Finspong, Sweden
Daniel Lörstad
Siemens Industrial Turbomachinery AB, Finspong, Sweden
Paper No:
GT2015-44095, V04BT04A066; 11 pages
Published Online:
August 12, 2015
Citation
Barhaghi, DG, & Lörstad, D. "Investigation of Combustion in a Dump Combustor Using Different Combustion and Turbulence Models." Proceedings of the ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. Volume 4B: Combustion, Fuels and Emissions. Montreal, Quebec, Canada. June 15–19, 2015. V04BT04A066. ASME. https://doi.org/10.1115/GT2015-44095
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