MODELLING THE HEAT TRANSFER PROCESS DURING THE COMBUSTION IN MARINE HIGH SPEED DIESEL ENGINES

The heat transfer in marine diesel engines is a complex phenomenon that occurs by two main components, the connective and radiative components under varying conditions such as temperature, pressure, and composition of incylinder gases. Hence, modeling the heat transfer phenomenon during the combustion process in high speed marine diesel engine imposes many difficulties in determining the heat flux through the combustion chamber walls. Many researches have been carried out many studies to understand and to model this phenomenon. Since modeling this phenomenon is an important step for modeling the whole combustion process which takes place inside the combustion chamber, many models and correlations of these models have developed for modeling this it in satisfied results and in a relative short time. This work concentrates on the two main methods for modeling the heat transfer in diesel engines which they are Hohenberg, Woschni and their correlations, with the use of MATLAB program for numerical modeling.