Recently, a fractal-based algebraic flame surface density (FSD) premixed combustion model has been derived and validated in the context of large eddy simulation (LES). The fractal parameters in the model, namely the cut-off scales and the fractal dimension were derived using theoretical models, experimental and direct numerical simulation (DNS) databases. The model showed good performance in predicting the premixed turbulent flame propagation for low to high Reynold numbers (Re) in ambient as well as elevated pressure conditions. Several LES combustion models have a direct counterpart in the Reynolds-averaged Navier–Stokes (RANS) context. In this work, a RANS version of the aforementioned LES subgrid scale FSD combustion model is developed. The performance of the RANS model is compared with that of the original LES model and validated with the experimental data. It is found that the RANS version of the model shows similarly good agreement with the experimental data.
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February 2019
Research-Article
Development of a RANS Premixed Turbulent Combustion Model Based on the Algebraic Flame Surface Density Concept
Usman Allauddin,
Usman Allauddin
Fakultät für Luft-und Raumfahrttechnik,
Institut für Thermodynamik,
Universität der Bundeswehr München,
Neubiberg 85579, Germany;
Department of Mechanical Engineering,
NED University of Engineering and Technology,
Karachi 75270, Pakistan
e-mail: usman.allauddin@unibw.de
Institut für Thermodynamik,
Universität der Bundeswehr München,
Neubiberg 85579, Germany;
Department of Mechanical Engineering,
NED University of Engineering and Technology,
Karachi 75270, Pakistan
e-mail: usman.allauddin@unibw.de
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Michael Pfitzner
Michael Pfitzner
Fakultät für Luft-und Raumfahrttechnik,
Institut für Thermodynamik,
Universität der Bundeswehr München,
Neubiberg 85579, Germany
Institut für Thermodynamik,
Universität der Bundeswehr München,
Neubiberg 85579, Germany
Search for other works by this author on:
Usman Allauddin
Fakultät für Luft-und Raumfahrttechnik,
Institut für Thermodynamik,
Universität der Bundeswehr München,
Neubiberg 85579, Germany;
Department of Mechanical Engineering,
NED University of Engineering and Technology,
Karachi 75270, Pakistan
e-mail: usman.allauddin@unibw.de
Institut für Thermodynamik,
Universität der Bundeswehr München,
Neubiberg 85579, Germany;
Department of Mechanical Engineering,
NED University of Engineering and Technology,
Karachi 75270, Pakistan
e-mail: usman.allauddin@unibw.de
Michael Pfitzner
Fakultät für Luft-und Raumfahrttechnik,
Institut für Thermodynamik,
Universität der Bundeswehr München,
Neubiberg 85579, Germany
Institut für Thermodynamik,
Universität der Bundeswehr München,
Neubiberg 85579, Germany
1Corresponding author.
Manuscript received April 27, 2018; final manuscript received August 11, 2018; published online October 10, 2018. Assoc. Editor: Riccardo Da Soghe.
J. Eng. Gas Turbines Power. Feb 2019, 141(2): 021025 (8 pages)
Published Online: October 10, 2018
Article history
Received:
April 27, 2018
Revised:
August 11, 2018
Citation
Allauddin, U., and Pfitzner, M. (October 10, 2018). "Development of a RANS Premixed Turbulent Combustion Model Based on the Algebraic Flame Surface Density Concept." ASME. J. Eng. Gas Turbines Power. February 2019; 141(2): 021025. https://doi.org/10.1115/1.4041308
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