A multi-dimensional quasi-discrete model for the analysis of Diesel fuel droplet heating and evaporation

Abstract : A new multi-dimensional quasi-discrete model is suggested and tested for the analysis of heating and evaporation of Diesel fuel droplets. As in the original quasi-discrete model suggested earlier, the components of Diesel fuel with close thermodynamic and transport properties are grouped together to form quasi-components. In contrast to the original quasi-discrete model, the new model takes into account the contribution of not only alkanes, but also various other groups of hydrocarbons in Diesel fuels; quasi-components are formed within individual groups. Also, in contrast to the original quasi-discrete model, the contributions of individual components are not approximated by the distribution function of carbon numbers. The formation of quasi-components is based on taking into account the contributions of individual components without any approximations. Groups contributing small molar fractions to the composition of Diesel fuel (less than about 1.5%) are replaced with characteristic components. The actual Diesel fuel is simplified to form six groups: alkanes, cycloalkanes, bicycloalkanes, alkylbenzenes, indanes & tetralines, and naphthalenes, and 3 components \C19H34\ (tricycloalkane), \C13H12\ (diaromatic), and \C14H10\ (phenanthrene). It is shown that the approximation of Diesel fuel by 15 quasi-components and components, leads to errors in estimated temperatures and evaporation times in typical Diesel engine conditions not exceeding about 3.7% and 2.5% respectively, which is acceptable for most engineering applications.
Keywords : Droplets
Type de document :
Article dans une revue
Fuel, Elsevier, 2014, 129, pp.238 - 266. 〈10.1016/j.fuel.2014.03.028〉
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https://hal.univ-lorraine.fr/hal-01425208
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Soumis le : mardi 3 janvier 2017 - 14:06:26
Dernière modification le : mardi 19 juin 2018 - 20:24:02

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S.S. Sazhin, M. Al Qubeissi, R. Nasiri, V.M. Gun’ko, A.E. Elwardany, et al.. A multi-dimensional quasi-discrete model for the analysis of Diesel fuel droplet heating and evaporation. Fuel, Elsevier, 2014, 129, pp.238 - 266. 〈10.1016/j.fuel.2014.03.028〉. 〈hal-01425208〉

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