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contributor authorElhalwagy, Mahmoud
contributor authorZhang, Chao
date accessioned2019-03-17T09:59:26Z
date available2019-03-17T09:59:26Z
date copyright2/14/2019 12:00:00 AM
date issued2019
identifier issn0195-0738
identifier otherjert_141_08_082204.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4255833
description abstractIn this paper, five biodiesel global combustion decomposition steps are added to a surrogate mechanism to accurately represent the chemical kinetics of the decomposition of different levels of saturation of biodiesel, which are represented by five major fatty acid methyl esters. The reaction constants were tuned based on the results from the numerical simulations of the combustion process in an ignition quality tester (IQT) in order to obtain accurate cetane numbers. The prediction of the complete thermophysical properties of the five constituents is also carried out to accurately represent the physics of the spray and vaporization processes. The results indicated that the combustion behavior is controlled more by the spray and breakup processes for saturated biodiesel constituents than by the chemical delay, which is similar to the diesel fuel combustion behavior. The chemical delay and low temperature reactions were observed to have greater effects on the combustion and ignition delay for the cases of the unsaturated biodiesels. The comparison between the physical ignition delay and overall ignition delay between the saturated and unsaturated biodiesel constituents has also confirmed those stronger effects for the physical delay in the saturated compounds as compared to the unsaturated compounds. The validation of the proposed model is conducted for the simulations of two direct injection diesel engines using palm methyl ester and rape methyl ester.
publisherThe American Society of Mechanical Engineers (ASME)
titleA Proposed Biodiesel Combustion Kinetics Based on the Computational Fluid Dynamics Results in an Ignition Quality Tester
typeJournal Paper
journal volume141
journal issue8
journal titleJournal of Energy Resources Technology
identifier doi10.1115/1.4042530
journal fristpage82204
journal lastpage082204-13
treeJournal of Energy Resources Technology:;2019:;volume( 141 ):;issue: 008
contenttypeFulltext


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