IJREH | Aerodynamically Study by Mathematical model Of Vertical Low NOX Swirl Burner in Natural Draft Furnace

Indexing and Abstracting

Aerodynamically Study by Mathematical model Of Vertical Low NOX Swirl Burner in Natural Draft Furnace

Hassan Al-haj Ibrahim , Ethat Aloosh , Asya Alabdalah

International Journal of Rural Development, Environment and Health Research(IJREH), Vol-2,Issue-1, January - February 2018, Pages 36-47, 10.22161/ijreh.2.1.5

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Abstract:

The flow field and mixing characters of high efficiency vortices in one type of Radially Stratified Flame Core Burner RSFC where analysed through Cold computing fluid dynamics model CFD in accordance with Mathematical model for flame visualization. The model gives good results and clears the important aerodynamics features of a typical low Nitrogen Oxides NOx of internal staging schematic. The model can be used to evaluate this design performance or to get the necessary information for development its efficiency in accordance with the global demand to clean energy with high efficiency and low NOx emissions. The mixing of this burner dominated by coherent structures, so it is outperform the molecular diffusivity and the length which fluids will mix is independent of the fluid velocity and can determined only from Taylor macroscale which related by the physical size of the fluid domain or in better understanding with the internal recirculating zone dimensions because it is form a region for axial mixing for species and smear out their residence time distribution.

Keywords:

coherent structure, gaseous mixing characters, internal staging schematic flame, cold flow flame model, Taylor macroscale, internal recirculation zone, penetration theory.

References:

[1] Coats, C. M.1996. Coherent structures in combustion. Progress in Energy and Combustion Science, 22(5):427–509.
[2] Veynante,D. Piana,J. Duclos,J. M. and Martel, C. 1996. Experimental analysis of flame surface density models for premixed turbulent combustion. In Symposium International on Combustion, volume 1, pages 413–420. Combustion Institute.
[3] Shihadeh,A.L. Toqan, M.A. Beér, J.M. Lewis P.F, Teare, J.D. Jiménez, J.L. and Barta, L. 1994. Low NOx emission from aerodynamicall ystaged oil-air turbulent diffusion flames. ASME FACT-18, Combustion Modeling, Scaling and Air Toxins
[4] Lee ,J. H. W. and Chu ,V. H. 2003. Turbulent jets and plumes - a lagrangian approach. Kluwer Academic Publishers.
[5] Gutmark, E. J. Ibrahim I. M. and Murugappan, S. Circular and noncircular subsonic jets in cross ﬂow.
[6] Fiskum,A. 2008. Calculation of NOx Formation in a Swirl Burner. Department of Energy and Process Engineering. Norwegian University of Science and Technology
[7] Lapacelle,A.2011. Modeling, control, and optimization of fuel/air mixing in a lean premixed swirl combustor using fuel staging to reduce pressure pulsations and NOx emissions.Berlin university of TU ,ISBN on line 9783-9783-2382-7
[8] Johari, H. 2006. Scaling of fully pulsed jets in crossflow. AIAA Journal, 44(11):2719–2725.
[9] Ashworth,D.A.2017.An Analytical Model to Predict the Length of Oxygen-Assisted, Swirled, Coal and Biomass Flames. Department of Mechanical Engineering Brigham Young University
[10] Lee,H.G. and Kim,J.2011. A comparison study of the Boussinesq and the variable density models on buoyancy-driven ﬂows. J Eng Math (2012) 75:15–27 DOI 10.1007/s10665-011-9504-2
[11] Rongy,L. Haugen,K.B and Firoozabadi, A.2011. Mixing from Fickian Diffusion and Natural Convection in Binary Non-Equilibrium Fluid Phases. Dept. of Chemical Engineering, Mason Laboratory, Yale University, New Haven, CT 06511. Wiley Online Library, DOI 10.1002/aic.12685.
[12] Alabdalah,A.Ibrahim,H.A. Aloosh,E, Hoyas,S.C.2018. Wall Y+ Approach for Dealing with Flow into Low NOx Swirler Burner in Industrial Furnaces. International Journal of Civil, Mechanical and Energy Science (IJCMES), Vol-4, Issue-1, Jan-Feb, 2018.]
[13] Ashworth,D.A.2017.An Analytical Model to Predict the Length of Oxygen-Assisted, Swirled, Coal and Biomass Flames. Department of Mechanical Engineering Brigham Young University
[14] Coussement, A. Gicquel, O. Schuller, T and Degrez, G.2008. Large eddy simulation of pulsed jet in crossﬂow. AIAA Paper 2010-561, 2010.Physics of Fluids, 20:075110, 2008.
[15] Bakker A., Cathie N., LaRoche R. (1994) Modeling of the Flow and Mixing in HEV Static Mixers. 8th European Conference on Mixing, September 21-23, 1994, Cambridge, U.K. IChemE Symposium Series No. 136, ISBN 0 85295 329 1, page 533-540.