RANS and LES Modeling of the GE10 Burner

Valerio Battaglia, Roberto Modi, Vincent Moreu, Vladimir Zimont

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DOI: 10.4236/epe.2011.35076                

Abstract

The paper presents 1) the numerical results of RANS (Reynolds Averaging Navier-Stokes) simulations for two versions of the premixed combustion GE10 burners: the old one with non-premixed and modified one with swirled premixed pilot flames; and 2) the numerical results of joint RANS/LES (Large Eddy Simulation) modelling of the ONERA model burner and a simplified GE10 combustor. The original joint RANS/LES approach is based on using the Kolmogorov theory for modelling sub-grid turbulence and combustion intensity and using RANS numerical results for closure the LES model equations. The main conclusion is that developed joint RANS/LES approch is the efficient timesaving tool for simulations both the average and instantaneous fields of parameters in gas turbine and boiler burners with premixed combustion.

Keywords

Turbulent Premixed Combustion, Gas Turbine Burner, Joint RANS/LES Simulation

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	V. L. Zimont, “A Theory of Turbulent Premixed Combus- tion at High Reynolds Numbers,” Combustion, Explosion, and Shock Waves, Vol. 15, No. 3, 1979, pp. 305-311. doi:10.1007/BF00785062
[2]	V. L. Zimont, “Gas Premixed Combustion at High Tur- bulence. Turbulent Flame Closure Combustion Model,” Experimental Thermal and Fluent Science, Vol. 21, No. 1-3, 2000, pp. 179-186. doi:10.1016/S0894-1777(99)00069-2
[3]	V. Zimont, “Kolmogorov’s Legacy and Turbulent Pre- Mixed Combustion Modelling,” In: W. J. Carey, Ed., New Developments in Combustion Research, Nova Science Publishers, New York, 2006, pp. 1-93.
[4]	V. Zimont, W. Polifke, M. Bettelini and W. Weisenstein, “An Efficient Computational Model for Premixed Turbu- lent Combustion at High Reynolds Numbers Based on a Turbulent Flame Speed Closure,” Journal of Engineering for Gas Turbines and Power (Transactions of the ASME), Vol. 120, No. 3, 1998, pp. 526-532. doi:10.1115/1.2818178
[5]	V. Biagioli, L. Zimont and K. J. Syed “Modelling and Nu- merical Simulation of Turbulent Combustion in DLE Burners Based on a Turbulent Flame Speed Approach,” International Joint Power Generation Conference, New Orleans, 4-7 June 2001, pp. 1-14.
[6]	V. L. Zimont and V. Battaglia, “Joint RANS/LES Ap- proach to Premixed Flame Modelling in the Context of the TFC Combustion Model, Flow, Turbulence and Com- bustion”, Vol. 77, No. 1-4, 2006, pp. 305-331.
[7]	T. Poinsot and L. Selle, “LES and Acoustic Analysis of Combustion Instabilities in Gas Turbine,” Plenary Lec- tures ECCOMAS—Computational Combustion Sympo- sium, Lisbon, 21-24 June 2005.
[8]	V. L. Zimont and A. N. Lipatnikov, “A Numerical Model of Premixed Turbulent Combustion of Gases,” Chemical Physics Reports, Vol. 14, No. 7, 1995, pp. 993-1025.
[9]	V. P. Karpov, A. N. Lipatnikov and V. L. Zimont, “Test of the Engineering Premixed Combustion Model,” Sympo- sium (International) on Combustion, Vol. 26, No. 1, 1996, pp. 249-261.
[10]	P. Moreau, “Turbulent Flame Development in a High Velocity Premixed Flow,” American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting, Los Angeles, 24-26 January 1977.
[11]	F. Biagioli, “Stabilization Mechanism of Turbulent Pre- Mixed Flames in Strongly Swirled Flows,” Combustion Theory and Modelling, Vol. 10, No. 3, 2006, pp. 389-412. doi:10.1080/13647830500448347