A Numerical Prediction Method for the Combustion Process in a Homogeneous Charge Compression Ignition Engine

Abstract

A combustion process in an HCCI engine has been simulated using CFD code in conjunction with 5-step global reaction model for hydrocarbon fuels. The Large Eddy Simulation (LES) was employed to describe turbulent transport. Two different initial conditions were prepared. One is the homogeneous fuel distribution and the other is the heterogeneous fuel distribution. From the calculation results of combustion process, it is found that the heat release rate for the heterogeneous case shows more moderate than that of the homogeneous case.