Multidimensional Modeling of Marine Diesel Engine Using Detailed Chemistry and Turbulent Diesel Spray Combustion Model

Özgür Oguz Taskiran

Mechanical Engineering Faculty
Istanbul Technical University, Gümüssuyu, Istanbul, Turkey
taskiranoz@itu.edu.tr

Metin Ergeneman

Mechanical Engineering Faculty
Istanbul Technical University, Gümüssuyu, Istanbul, Turkey
ergene@itu.edu.tr

Abstract

This study is based on multidimensional mixture formation and turbulent spray combustion modeling in Diesel engines. The equations of fluid dynamics, turbulence, chemical reactions and sub-models for droplet break-up, collision, evaporation were used to produce numerical model for mixture formation and combustion. Equations were solved on both constant volume and diesel engine model geometries by using KIVA3V Computational Fluid Dynamics code. Because of its simplicity, the constant volume calculations are chosen for the spray model studies. Reasonable agreement achieved between real and model sprays in constant volume calculations in respect of ignition delay and flame propagation with both n-heptane and diesel surrogate fuel. By using the information that was obtained from the constant volume calculations, a marine engine combustion chamber is modeled.