A One-Dimensional Variable Area Computer Simulation of Combustion in a Divided Chamber, Stratified Charge Engine

[+] Author and Article Information
A. A. Boni, M. Chapman, G. P. Schneyer

Systems, Science and Software, La Jolla, Calif.

J. Eng. Power 98(4), 441-446 (Oct 01, 1976) (6 pages) doi:10.1115/1.3446208 History: Received May 13, 1975; Online July 14, 2010


A numerical simulation model of a divided chamber, stratified charge engine has been developed. The conservation equations of fluid mechanics, coupled to a single, global chemical reaction model have been solved by use of a generalized Eulerian-Lagrangian numerical technique for a one-dimensional, variable-area combustion volume. The simulation results in a prediction of the flame propagation dynamics which leads to temperatures, pressures, and species concentrations as functions of spatial location, time, and the various engine design parameters such as rpm and fuel/air ratio. The results indicate that both broad, turbulent flame fronts as well as detonations can occur, depending upon the rate of the oxidation reaction and the rate of heat release. The technique should be useful for calculating concentrations of pollutants as well as for investigating various design options such as fuel/air ratio and stratification function on pollution level and engine performance.

Copyright © 1976 by ASME
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