Publicado 12 números por año
ISSN Imprimir: 1091-028X
ISSN En Línea: 1934-0508
Indexed in
NUMERICAL MODELING OF EVAPORATION ENHANCEMENT OF AVIATION-GRADE KEROSENE SPRAY IN POROUS MEDIA COMBUSTORS
SINOPSIS
This article presents a numerical study of evaporation enhancement of aviation-grade kerosene spray in porous media combustors. A two-energy equation model was employed to predict porous medium and gas phase temperatures. Governing equations were solved on a two-dimensional axisymmetric computational domain using FLUENT. An airblast atomizer model was used to simulate injection of kerosene spray on the porous medium. Heat feedback rate to the porous medium from the combustion zone was simulated by defining a uniform volumetric heat source in the porous medium. A range of heat feedback rates varying from 0.8% to 1.1% of average heat input to the combustor was specified. At 1% heat feedback rate, the porous medium attained a peak temperature of 465 K. Surface temperature measurements indicate that the transverse distribution was uniform within ±1.5% of the mean value. Transverse vapor concentration results downstream of the porous medium showed that the distribution in the transverse direction was uniform within §5% of the mean value. This demonstrates that porous medium uniformly distributes the fuel vapor-air mixture, a desirable feature in combustors. Effects of heat feedback rate, porosity of the medium, fuel-air equivalence ratio, and flame temperature on transverse vapor concentration profiles were also numerically studied.
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Ismail A. K., Ibrahim N.H., Shamsuddin K. A., Abdullah M.Z., Zubair M., A practical approach in porous medium combustion for domestic application: A review, IOP Conference Series: Materials Science and Engineering, 370, 2018. Crossref
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Tongbai Pornsawan, Keawchart Kitti, Krittacom Bundit, Spherical packed-bed porous burner using diesel oil as fuel, Energy Reports, 7, 2021. Crossref
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Periasamy Chendhil, Gollahalli Subramanyam R., Experimental Investigation of Kerosene Spray Flames in Inert Porous Media near Lean Extinction, Energy & Fuels, 25, 8, 2011. Crossref