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, and 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