Auto-selection of quasi-components/components in the multi-dimensional quasi-discrete model

Mansour Al Qubeissi, Nawar Hasan Imran Al-Esawi, Sergei S. Sazhin

Research output: Contribution to journalArticlepeer-review


A new algorithm for the auto-selection of quasi-components and components (QC/Cs) in the ‘multi-dimensional quasi-discrete’ model is suggested. This algorithm is applied to the analysis of heating and evaporation of multi-component fuel droplets. It allows one to automatically select QC/Cs and update the initial selection during droplet evaporation. The new algorithm is expected to be applicable to the analysis of a wide range of fuels and fuel blends. It can be directly implemented into CFD codes with minimal intervention by end-user. Using this algorithm, the effects of transient diffusion of species on droplet lifetimes are investigated for mixtures of Diesel and E85 (85% vol. ethanol and 15% vol. gasoline) fuels. It is shown that the new algorithm can reduce the analysis of the E85-Diesel fuel droplets, taking into account the contributions of up to119 components at the initial stage of heating and evaporation, to that based on 5 QC/Cs, near the end of droplet evaporation, with up to 1.9% errors in predicted droplet temperatures and radii. The CPU time needed to perform calculations using the new algorithm is shown to be 80% less than that when considering the full composition of fuel.
Original languageEnglish
Article numberJFUE_120245
Pages (from-to)(In-press)
Publication statusAccepted/In press - 17 Jan 2021


  • modelling
  • Modelling and analysis
  • CFD
  • Combustion
  • Analytical approach
  • Mathematical modeling
  • Fuel
  • Droplet
  • Droplet combustion
  • Numerical analysis
  • Multi-component fuel
  • Fuel blends
  • Alternative fuels
  • Biofuel

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Energy(all)
  • Engineering(all)
  • Numerical Analysis
  • Computational Mathematics

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