Droplet evaporation in a "stabilized cool flame" environment is a novel technique capable of producing a heated, highly homogenous gaseous mixture that can be subsequently either burnt or utilized in liquid fuel reforming applications for fuel cell systems. Cool flame reactions manifest themselves in the low-temperature hydrocarbon oxidation region representing essentially a process during which the fuel is partially oxidized, but not burnt. The work aims to numerically investigate the physico-chemical phenomena occurring in diesel oil fed, atmospheric pressure, tubular, "stabilized cool flame" reactors with the use of an in-house two-phase, Eulerian-Lagrangian RANS computational fluid dynamics code. A twofold model development procedure utilizing the fitting parameter technique has been followed in order to simulate cool flame reactivity. In the first case, a semi-empirical model has been developed, based on physico-chemical reasoning coupled with information from available experimental data. In the second case, a tabulated chemistry approach was utilized in order to estimate both heat release and fuel consumption rates due to cool flame reactions. Numerical predictions utilizing both cool flame modelling approaches have been compared with available reactor temperature measurements, achieving satisfactory levels of agreement, while requiring limited computational resources.
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