Cover page and Table of Contents: PDF (size: 1111KB)
Full Text (PDF, 1111KB), PP.1-17
Views: 0 Downloads: 0
Combustion, Eddy Dissipation Concept, Diffusion Flamelet, MILD combustion, Delft Co-flow Burner
Numerical study simplifies the challenges associated with the study of moderate and intense low oxygen Dilution (MILD) combustion. In this study, the numerical investigation of turbulent non-premixed combustion in a Delft Co-flow Burner presents, which emulates MILD combustion behaviour. MILD combustion yields high thermal and fuel efficiency along with very low emission of pollutants. Using commercial ANSYS software, this study focuses on assessing the performance of two different turbulent-chemistry interactions models: a) Eddy Dissipation Concept (EDC) with reduced chemical kinetic schemes with 22 species (DRM 22) and b) Steady Diffusion Flamelet model, which is adopted in the Probability Density Function (PDF) approach method using chemical kinetic schemes GRI mech 3.0. The results of numerical simulations are compared with available experimental data measurement and calculated by solving the k-epsilon realizable turbulence model for two different jet fuel Reynolds numbers of 4100 and 8800. It has observed that the Steady Diffusion Flamelet PDF model approach shows moderately better agreement with the predicting temperature fields of experimental data using chemical Mechanism GRI mech 3.0 than the EDC model approach with a chemical mechanism with DRM 22. However, both models perform a better understanding for predicting the velocity field with experimental data. The models also predict and capture the effects of lift-off height (ignition kernel) with increasing of fuel jet Reynolds number, Overall, despite having more computational cost, the EDC model approach with GRI mech 3.0 yields better prediction. These featured models are suitable for the application of complex industrial combustion concentrating low emission combustion.
Jarief Farabi, Mohammad Ismail, Ebrahim Abtahizadeh, " Numerical Study of Non-premixed MILD Combustion in DJHC Burner Using Eddy Dissipation Concept and Steady Diffusion Flamelet Approach ", International Journal of Engineering and Manufacturing (IJEM), Vol.11, No.3, pp. 1-17, 2021. DOI: 10.5815/ijem.2021.03.01
S. E. Hosseini, M. a. Wahid, and A. A. A. Abuelnuor, “High Temperature Air Combustion: Sustainable Technology to Low NO x Formation.,” Int. Rev. Mech. Eng., vol. 6, no. 5, pp. 947–953, 2012.
T. Plessing, N. Peters, and J. G. Wünning, “Laseroptical investigation of highly preheated combustion with strong exhaust gas recirculation,” in Symposium (International) on Combustion, 1998.
B. Danon, W. De Jong, and D. J. E. M. Roekaerts, “Experimental and numerical investigation of a FLOX combustor firing low calorific value gases,” Combust. Sci. Technol., 2010.
S. Orsino, R. Weber, and U. Bollettini, “Numerical simulation of combustion of natural gas with high-temperature air,” Combust. Sci. Technol., vol. 170, no. 1, pp. 1–34, 2001.
M. Mancini, P. Schwöppe, R. Weber, and S. Orsino, “On mathematical modelling of flameless combustion,” Combust. Flame, 2007.
J. P. Kim, U. Schnell, and G. Scheffknecht, “Comparison of different global reaction mechanisms for MILD combustion of natural gas,” Combust. Sci. Technol., 2008.
A. De, E. Oldenhof, P. Sathiah, and D. Roekaerts, “Numerical simulation of Delft-Jet-in-Hot-Coflow (DJHC) flames using the eddy dissipation concept model for turbulence-chemistry interaction,” Flow, Turbul. Combust., vol. 87, no. 4, pp. 537–567, 2011.
R. M. Kulkarni and W. Polifke, “LES of Delft-Jet-In-Hot-Coflow (DJHC) with tabulated chemistry and stochastic fields combustion model,” Fuel Process. Technol., 2013.
M. Katsuki and T. Hasegawa, “The science and technology of combustion in highly preheated air,” in Symposium (International) on Combustion, 1998.
M. De Joannon, A. Saponaro, and A. Cavaliere, “Zero-dimensional analysis of diluted oxidation of methane in rich conditions,” Proc. Combust. Inst., 2000.
B. B. Dally, A. N. Karpetis, and R. S. Barlow, “Structure of turbulent non-premixed jet flames in a diluted hot coflow,” Proc. Combust. Inst., 2002.
E. Oldenhof, M. J. Tummers, E. H. van Veen, and D. J. E. M. Roekaerts, “Ignition kernel formation and lift-off behaviour of jet-in-hot-coflow flames,” Combust. Flame, 2010.
ANSYS Inc., “ANSYS Fluent 12.0 User’s Guide,” ANSYS Inc., no. April, 2009.
D. C. Wilcox, Turbulence Modeling for CFD, 2nd ed. D C W Industries, 1994.
D. Launder, B. and Spalding, Mathematical Models of Turbulence. Academic Press, 1972.
I. R. Gran and B. F. Magnussen, “A Numerical Study of a Bluff-Body Stabilized Diffusion Flame. Part 2. Influence of Combustion Modeling And Finite-Rate Chemistry,” Combust. Sci. Technol., 1996.
I. S. Ertesvåg and B. F. Magnussen, “The Eddy dissipation turbulence energy cascade model,” Combust. Sci. Technol., 2000.
J. A. van Oijen and L. P. H. de Goey, “Modelling of premixed laminar flames using flamelet-generated manifolds,” Combust. Sci. Technol., 2000.
J. A. Van Oijen, R. J. M. Bastiaans, and L. P. H. De Goey, “Low-dimensional manifolds in direct numerical simulations of premixed turbulent flames,” Proc. Combust. Inst., 2007.
M. Brandt, W. Polifke, B. Ivancic, P. Flohr, and B. Paikert, “Auto-ignition in a gas turbine burner at elevated temperature,” in American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI, 2003.
A. Information, Institutional Repository Corporate governance and corporate failure : evidence from listed UK firms This item was submitted to Loughborough University as a PhD thesis by the author and is made available in the Institutional Repository.