Analysis of recirculation zone and ignition position of non-premixed bluff-body for biogas mild combustion

Noor, M. M. and Wandel, Andrew P. and Yusaf, Talal (2013) Analysis of recirculation zone and ignition position of non-premixed bluff-body for biogas mild combustion. International Journal of Automotive and Mechanical Engineering, 8 (1). pp. 1176-1186. ISSN 2229-8649

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Abstract

Combustion ignition study is important due to the combustion process becoming more lean and efficient. This paper studied the recirculation zone and ignition location for the bluff-body non-premixed MILD burner with biogas used as fuel. The location of the ignition was critical to ensure that the spark energy supply during the ignition process can successfully ignite the mixture of air and fuel. The numerical calculations were done using the commercial code ANSYS Fluent to simulate the furnace with a bluff-body burner to determine the recirculation zone. The turbulence model used was the realizable k-ε model. The inner recirculation zone between the air and fuel nozzle is the best location for the ignition point, since the low velocity of air and fuel mixing will assist the ignition process. This is because the ignition energy will have time to ignite the mixture in the low speed turbulent swirl flow. The most suitable location with the highest possibility of ignition is the center of the recirculation zone.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © Universiti Malaysia Pahang - open access journal - Published Version able to be made available to the public.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 24 Mar 2014 05:38
Last Modified: 24 Jun 2014 02:34
Uncontrolled Keywords: computational fluid dynamics; bluff-body MILD burner; recirculation zone; biogas; spark ignition
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering
09 Engineering > 0915 Interdisciplinary Engineering > 091501 Computational Fluid Dynamics
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
Socio-Economic Objective: B Economic Development > 85 Energy > 8505 Renewable Energy > 850501 Biofuel (Biomass) Energy
URI: http://eprints.usq.edu.au/id/eprint/24981

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