Volume 2: Combustion, Fuels and Emissions, Parts a and B 2012
DOI: 10.1115/gt2012-68060
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Characterizing the Mechanism of Lean Blowout for a Recirculation-Stabilized Premixed Hydrogen Flame

Abstract: The stability of hydrogen combustion under lean premixed conditions in a back-mixed jet-stirred reactor (JSR), is experimentally and numerically investigated. The goal is to understand the mechanism of flame extinction in this recirculation-stabilized flame environment. Extinction is achieved by holding the air flow rate constant and gradually decreasing the flow rate of the hydrogen fuel until a blowout event occurs. In order to gain insight on the mechanism controlling blowout, two dimensional computational … Show more

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Cited by 15 publications
(9 citation statements)
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“…This is analogous to operating combustion systems, which become more uniform at conditions when the flames velocities are reduced or reactor loading increases. 33,34 CFD simulations confirm that increasing fuel concentration shifts the primary reacting zone…”
Section: Resultsmentioning
confidence: 86%
“…This is analogous to operating combustion systems, which become more uniform at conditions when the flames velocities are reduced or reactor loading increases. 33,34 CFD simulations confirm that increasing fuel concentration shifts the primary reacting zone…”
Section: Resultsmentioning
confidence: 86%
“…This is analogous to operating combustion systems, which become more uniform at conditions when the flames velocities are reduced or reactor loading increases. 33,34 CFD simulations confirm that increasing fuel concentration shifts the primary reacting zone Corresponding Author *ivn@uw.edu; +1 206 543-5248; ORCID: 0000-0002-6347-7450…”
Section: Methodsmentioning
confidence: 97%
“…Experimentally in combustion scenarios, it is challenging to achieve the PSR limit even in the high-intensity reactors for hydrocarbon fuels [80][81][82][83] and hydrogen. 71,84 As the combustion approaches the PSR limit, the reaction reaches the blowout. To evaluate the stability of the SCWO process, we examine local Da and turbulent Re of the location where maximum oxidation rates are observed.…”
Section: Scwo Experiments Vs Simulation: Kinetic Model Selectionmentioning
confidence: 99%