Numerical investigation of laminar flame speed of gasoline - Ethanol/air mixtures with varying pressure, temperature and dilution
Document Type
Conference Proceeding
Publication Date
4-12-2010
Department
Department of Mechanical Engineering-Engineering Mechanics
Abstract
A numerical analysis was performed to study the variation of the laminar burning speed of gasoline-ethanol blend, pressure, temperature and dilution using the one-dimensional premixed flame code CHEMKIN-. A semi-detailed validated chemical kinetic model (142 species and 672 reactions) for a gasoline surrogate fuel was used. The pure components in the surrogate fuel consist of n-heptane, isooctane and toluene. The ethanol mole fraction was varied from 0 to 85 percent, initial pressure from 4 to 8 bar, initial temperature from 300 to 600K, and the EGR dilution from 0 to 32% to represent the in-cylinder conditions of a spark-ignition engine. The laminar flame speed is found to increase with ethanol concentration and temperature but decrease with pressure and dilution. A correlation has been proposed to calculate laminar flame speeds of gasoline-ethanol/air mixtures at different pressures, temperatures, and EGR that can be used in parametric burn rate combustion models for engine simulation.
Publication Title
SAE Technical Papers
Recommended Citation
Syed, I.,
Yeliana, Y.,
Mukherjee, A.,
Naber, J.,
&
Michalek, D.
(2010).
Numerical investigation of laminar flame speed of gasoline - Ethanol/air mixtures with varying pressure, temperature and dilution.
SAE Technical Papers, 517-528.
http://doi.org/10.4271/2010-01-0620
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/2945
