Steady Heat Transfer Calculation of Diesel Engine Based on Strong-coupling Theory

In order to solve the problems of flow and heat transfer between cooling water and cylinder block,assembly,strong coupling theory was applied to the steady heat transfer calculation of diesel engine.The fluid-solid coupling model of cylinder block,cylinder head,cylinder gasket and cooling water-jacket was built,the heat transfer boundary conditions of gas side was determined by simulating the working process,and the numerical simulation was carried out.Finally,the velocity,pressure and heat transfer coefficient in cooling water-jacket were acquired and the temperature distribution of main heated components was also achieved.