%0 Journal Article %T Numerical Investigation of Droplet Evaporation in High-Pressure Dual-Fuel Conditions Using a Tabulated Real-Fluid Model %+ IFP Energies nouvelles (IFPEN) %+ Institut Carnot IFPEN Transports Energie %A Gaballa, Hesham %A Jafari, Sajad %A Habchi, Chaouki %A de Hemptinne, Jean-Charles %< avec comité de lecture %@ 0017-9310 %J International Journal of Heat and Mass Transfer %I Elsevier %V 189 %P 122671 %8 2022-06-15 %D 2022 %R 10.1016/j.ijheatmasstransfer.2022.122671 %K Droplet evaporation %K Real-fluid model %K Two-phase flow %K Thermodynamic tabulation %K Vapor-liquid equilibrium %K Ternary mixture %Z Chemical Sciences %Z Environmental SciencesJournal articles %X The substitution of diesel by cleaner renewable fuels such as short-chain alcohols in dual-fuel internal combustion engines is considered an attractive solution to reduce the pollutant emissions from internal combustion engines. In this context, two-phase flow models for multi-component mixtures considering the real-fluid thermodynamics are required for further understanding the evaporation and mixing processes in transcritical conditions. The present study proposes an efficient real-fluid model (RFM) based on a two-phase, fully compressible four-equation model under mechanical and thermal equilibrium assumptions with a diffused interface and closed by a thermodynamic equilibrium tabulation approach. Compared to previous research limited to binary mixtures tabulation, the proposed pre-tabulation approach can further handle ternary mixtures using a thermodynamic table that has been coupled to the CONVERGE CFD solver. The newly developed RFM model has been applied to investigate the evaporation of an n-dodecane droplet in a mixed ambient (methanol and nitrogen) relevant to dual-fuel configuration compared to pure nitrogen ambient. The four equation model is closed by a tabulated Cubic Plus Association (CPA) and Peng–Robinson (PR) equations of state for the droplet evaporation in a mixed and single component ambient, respectively. Numerical predictions show that the n-dodecane droplet lifetime decreases monotonically with increasing the methanol ambient concentration under the considered transcritical conditions. The performed thermodynamic analysis demonstrates that the droplet follows a different thermodynamic path as a function of the methanol ambient concentration. The different mechanisms contributing to the droplet lifetime behavior under varying ambient conditions are discussed. %G English %2 https://ifp.hal.science/hal-03615012/document %2 https://ifp.hal.science/hal-03615012/file/Numerical%20Investigation%20of%20Droplet%20Evaporation%20in%20High%20Pressure%20Dual%20Fuel%20Conditions%20Using%20a%20Tabulated%20Real%20Fluid%20Model.pdf %L hal-03615012 %U https://ifp.hal.science/hal-03615012 %~ SDE %~ IFP %~ OPENAIRE %~ GIP-BE