3-DIMENSIONAL DIESEL-ENGINE COMBUSTION SIMULATION WITH A MODIFIED EPISO PROCEDURE

A modified EPISO, or Engine Pressure Implicit with Splitting of Operat ors, algorithm called EPISOC, is presented that specifically caters to combustion calculation in internal combustion engines. For the EPISOC algorithm, the bulk adjustment, one of the key elements in the EPISO, is dispensed with and a correction step is provided for scalars. EPIS OC is incorporated with a discrete droplet model for diesel spray and a hybrid of Arrhenius kinetics and the eddy breakup model for simulati on of diesel engine combustion processes. An application case is exami ned by comparing the present calculations with those obtained using th e KIVA code and with experiments.