Reduced toluene primary reference fuel (TPRF; toluene/n-heptane/iso-octane) surrogate chemical kinetic model for compression ignition simulations

Paper #:
  • 2018-01-0191

Published:
  • 2018-04-03
Abstract:
Toluene primary reference fuel (TPRF) (mixture of toluene, iso-octane and heptane) is a suitable surrogate to represent a wide spectrum of real fuels with varying octane sensitivity. Investigating different surrogates in engine simulations is a prerequisite to identify the best matching mixture. However, running 3D engine simulations using detailed models is currently impossible and reduction of detailed models is essential. This work presents an AramcoMech reduced kinetic model developed at KAUST for simulating complex TPRF surrogate blends. A semi-decoupling approach was used together with species and reaction lumping to obtain a reduced kinetic model. The model was widely validated against experimental data including shock tube and rapid compression machine ignition delay times, premixed laminar flame speeds, and jet stirred reactor speciation measurements. Finally the model was utilized to simulate the combustion of a low reactivity gasoline fuel under partially premixed combustion conditions.
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