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contributor authorRock, Nicholas
contributor authorChterev, Ianko
contributor authorEmerson, Benjamin
contributor authorWon, Sang Hee
contributor authorSeitzman, Jerry
contributor authorLieuwen, Tim
date accessioned2019-03-17T11:15:00Z
date available2019-03-17T11:15:00Z
date copyright1/11/2019 12:00:00 AM
date issued2019
identifier issn0742-4795
identifier othergtp_141_07_071005.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4256844
description abstractThis paper describes results from an experimental study on influences of liquid fuel properties on lean blowout (LBO) limits in an aero-type combustor. In particular, this work aimed to elucidate the roles of fuel chemical and physical properties on LBO. Fuel chemical properties stem from the fuel chemical structure, thus governing chemical kinetic behaviors of oxidation characteristics (e.g., ignition or extinction time scales) and others (e.g., fuel thermal stability or sooting tendencies). Fuel physical properties affect the spray characteristics (e.g., atomization and evaporation rates). Eighteen different fuels, with a wide range of physical and chemical fuel properties, were tested. Several of these fuels were custom blends, developed to break intercorrelations between various physical and chemical properties. Fuel physical and chemical property effects were further separated by measuring blowout boundaries at three air inlet temperatures between 300 and 550 K, enabling variation in vaporization rates. The condition at 300 K corresponds to a temperature that is less than the flash point for most of the studied fuels and, therefore, forming a flammable mixture was challenging in this regime. The opposite scenario occurred at 550 K, where fuel droplets evaporate quickly, and the temperature actually exceeds the auto-ignition temperatures of some of the fuels. At 300 K, the data suggest that blowout is controlled by fuel physical properties, as a correlation is found between the blowout boundaries and the fuel vaporization temperature. At 450 and 550 K, the blowout boundaries correlated well with the derived cetane number (DCN), related to the global chemical kinetic reactivity.
publisherThe American Society of Mechanical Engineers (ASME)
titleLiquid Fuel Property Effects on Lean Blowout in an Aircraft Relevant Combustor
typeJournal Paper
journal volume141
journal issue7
journal titleJournal of Engineering for Gas Turbines and Power
identifier doi10.1115/1.4042010
journal fristpage71005
journal lastpage071005-13
treeJournal of Engineering for Gas Turbines and Power:;2019:;volume( 141 ):;issue: 007
contenttypeFulltext


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