A Sequential Chemical Kinetics-CFD-Chemical Kinetics Methodology to Predict HCCI Combustion and Main Emissions

TitleA Sequential Chemical Kinetics-CFD-Chemical Kinetics Methodology to Predict HCCI Combustion and Main Emissions
Publication TypeConference Paper
Year of Publication2012
AuthorsBedoya, Iván Dario, Francisco J Cadavid, Samveg Saxena, Robert W Dibble, Salvador Aceves, Daniel Flowers
Conference NameSAE 2012 World Congress & Exhibition, April 24, 2012
Date Published04/2012
Conference LocationDetroit, Michigan, United States
Other Numbers2012-01-1119
Abstract

This study presents the development of a new HCCI simulation methodology. The proposed method is based on the sequential coupling of CFD analysis prior to autoignition, followed by multi-zone chemical kinetics analysis of the combustion process during the closed valve period. The methodology is divided into three steps: 1) a 1-zone chemical kinetic model (Chemkin Pro) is used to determine either the intake conditions at IVC to achieve a desired ignition timing or the ignition timing corresponding with given IVC conditions, 2) the ignition timing and IVC conditions are used as input parameters in a CFD model (Fluent 6.3) to calculate the charge temperature profile and mass distribution prior to autoignition, and 3) the temperature profile and mass distribution are fed into a multi-zone chemical kinetic model (Chemkin Pro) to determine the main combustion characteristics.

DOI10.4271/2012-01-1119