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Title	Numerical Modeling of Turbulent Jet Diffusion Flames Challenges and Implications for Flare Flame Simulations
Creator	Bish, Eric S.; Norton, Thomas S.
Publisher	Digitized by J. Willard Marriott Library, University of Utah
Date	1998
Spatial Coverage	presented at Maui, Hawaii
Abstract	Flare systems play an important role in the petrochemical, chemical processing, mining and waste handling industries. These systems need to perform satisfactorily under a wide range of operating conditions. Computational Fluid Dynamics (CFD) can be a powerful tool in conjunction with experimental testing in evaluating flare system performance to ensure reliability and safety. Utilizing CFD fully in the design of flare systems requires an understanding of the relevant physics as well as the current modeling tools available. To gain further insight into the numerical modeling of flare flames, CFD results using the standard k-e, realizable k-e and Reynolds stress turbulence models in FLUENT V5 were compared with experimental measurements in a buoyant, turbulent jet diffusion flame. Over the range of data available, all models perform comparably. Good agreement is seen for mean profiles of velocity, mixture fraction and temperature. Experimental data and simulation results compare well with established scaling laws for jet spreading rate and centerline momentum flux density. Based on these results, the realizable k-e model provides the most accurate, cost-effective solution for turbulence modeling in flare flames. Further investigation of these models in the buoyancy dominated, plume regime is suggested.
Type	Text
Format	application/pdf
Language	eng
Rights	This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
Conversion Specifications	Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician	Cliodhna Davis
ARK	ark:/87278/s68g8p95
Setname	uu_afrc
ID	13671
Reference URL	https://collections.lib.utah.edu/ark:/87278/s68g8p95

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Title	Page 16
Format	application/pdf
OCR Text	Show Proceedings of the ICASE/LaRC/AFORC Symposium on Modeling Complex Turbulent Flows, Hampton, VA. 13 Ground effects on pressure fluctuations in the atmospheric boundary layer (1978) M.M. Gibson & B.E. Launder, J. Fluid Mech., 86, 491-511. 14 Progress in the development of a Reynolds stress turbulence closure (1975) B.E. Launder, G.J. Reece & W. Rodi, J. Fluid Mech., 68(3), 537-566. 15 The structure of diffusion flames (1976) R.W. Bilger, Combust. Sci. Techno!., 13, 155. 16 Chemkin-ll: A fortran chemical kinetics package for the analysis of gas phase chemical kinetics (1989) R.J. Kee, F.M. Rupley & J.A. Miller, Sandia National Laboratories Report. SAND89-8009B. 17 A multigrid method based on the additive correction strategy (1986) B.R. Hutchinson & G.D. Raithby, Num. Heat Transfer, 9, 511- 537. 18 On density effects and large structures in turbulent mixing layers (1974) G.L. Brown & A. Roshko, Jour. Fl. Mech., 64, 775-816. 19 On the numerical modeling of buoyancy dominated turbulent vertical diffusion flames (1991) M.O. Annarumma, J.M. Most & P. Joulain, Combust. Flame, 85, 63-77. 20 Similarity solutions in buoyancy controlled turbulent diffusion flame modeling (1993) M.A. Pivovarov, H. Zhang, D.E. Ramaker, P.A. Tatem & F.W. Willliams, Combust. Flame, 92, 308-319. 21 Buoyant axisymmetric turbulent diffusion flames in still air (1982) H.Z. You & G.M. Faeth, Combust. FL, 44, 261-275.
Setname	uu_afrc
ID	13670
Reference URL	https://collections.lib.utah.edu/ark:/87278/s68g8p95/13670