Application of Liquid-solid Coupled Numerical Simulation Method in Steady Heat Transfer Calculation of an Engine

To solve the heat transfer between engine coolant and solid components such as cylinder liner and cylinder block,a numerical liquid-solid coupled simulation method was applied to steady heat transfer calculation in an engine.A liquid-solid coupled model of piston-liner-coolant-cylinder block was developed,which includes the contact heat transfer between solid components,and the coupled heat transfer between liquid and solid parts and makes the boundary conditions between engine parts more reasonable and simpler.The heat transfer calculation of a diesel engine was performed by this model.The result shows that there is smaller deviation between simulated and measured data,and the liquid-solid coupled simulation method can be used to simulate the steady heat transfer of engines.