Heating and evaporation of droplets of multi-component and blended fuels: A Review of Recent Modeling Approaches

Mansour Al Qubeissi, Sergei S. Sazhin, Nawar Al-Esawi, Ruslana Kolodnytska, Bidur Khanal, Mohammad Ghaleeh, A. E. Elwardany

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    11 Citations (Scopus)
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    In this review, recent models for the heating/evaporation of multicomponent and blended fuel droplets and their implementation into numerical codes, used for the analysis of the processes in internal combustion engines, are reviewed. In these models, the diffusion of species, recirculation, and temperature gradient inside droplets are considered. The focus of the review is on the group of models based on the implementation of the analytical solutions to the heat transfer and species diffusion equations inside droplets into numerical codes. Four key aspects are summarized: (1) application of the Discrete Component (DC) model and the Multi-Dimensional Quasi-Discrete Model (MDQDM) to a broad range of fuels, including petrol, diesel, ethanol, and biodiesel fuels and their blends, (2) formulation of fuel surrogates, with a focus on the recently introduced Complex Fuel Surrogate Model (CFSM), (3) overview of the recently introduced transient algorithm, Transient Multi-Dimensional Quasi-Discrete Model (TMDQDM), for an autogeneration of quasi-components, and (4) implementation of the latter into a computational fluid dynamics (CFD) code for a realistic engineering application to full cycle simulation in internal combustion engines. The original and modified versions of the DC model and MDQDM are evaluated for the heating and evaporation of droplets of bio/fossil-fuel (e.g., ethanol/petrol/biodiesel/diesel) blends. These were implemented into commercial CFD software and validated. The feasibility of formulating complex fuel surrogates for fuel blends, their implementation into CFD codes, and their application in the full engine cycle simulation before and after the onset of combustion (autoignition) are described.

    Original languageEnglish
    Article numberef-2021-02316g
    Pages (from-to)18220–18256
    Number of pages37
    JournalEnergy & Fuels
    Issue number22
    Early online date4 Nov 2021
    Publication statusPublished - 18 Nov 2021

    Bibliographical note

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Energy & Fuels, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://dx.doi.org/10.1021/acs.energyfuels.1c02316

    Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.


    This research was funded by the European Commission, KA107 British Council, Grant Nos. 2018-1-UK01-KA107-047386 (M.AQ., R.K.) and 2020-1-UK01-KA107-078517 (M.AQ.), and the Russian Science Foundation, Grant No. 21-19-00876 (S.S.S.).


    • Fuel
    • Droplet
    • Spray
    • Combustion
    • model approximation
    • CFD
    • simulation and modeling
    • Biofuel
    • Diesel
    • petrol engines
    • Biodiesel
    • Ethanol
    • Emission

    ASJC Scopus subject areas

    • Fluid Flow and Transfer Processes
    • Analytical Chemistry
    • Energy(all)
    • Automotive Engineering


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