Numerical study of water cooling jacket of a diesel engine using coupled field analysis

Abstract

The engine is the ‘heart’ of the vehicle. The heat energy generated by the combustion of fuel is converted into mechanical work by an engine. Optimum operating temperature of an engine is one of the important parameters behind an engine’s performance. So, the main function of the engine cooling system is to control the normal operating temperature of the engine. The 3DExperience platform is used in the present work to conduct coupled field analysis on a 4-cylinder diesel engine. On this model, initially ‘CFD and Thermal coupled analysis’ was performed and outcomes were observed for the input boundary conditions. To increase the cooling performance of jackets, the concept of ‘Design of experiment’ is used. For that purpose, the ‘Latin hypercube DoE’ technique, which is particularly well-liked among many DoE techniques, is used. For 10 different design points, the results are obtained by varying the values of input parameter such as mass flow rate of coolant and inlet coolant temperature. We finalized values of input parameters for which we got the maximum cooling performance. Structural analysis was carried out to find the stresses and displacement for the above input parameters. Results of ‘Structural analysis’ showed that the maximum displacement and maximum von mises stress generated within model were well below than the permissible limits.