Абстрактный

Heat transfer research of high-speed diesel engine block-coolant jacket

Zhang Zenglian

The thermal load of engine is always the main obstacle of the development of the engine. Based on diesel engine block-coolant jacket, the fluid structure interaction model is established, and the flow and the heat transfer of the block-coolant jacket are simulated and calculated. The results agreed well with the measured data. At the same time, according to the simulation results, the structure of the coolant jacket is made appropriate optimization, 3-structure improvement projects are put forward, and their simulating results are also compared. The cooling velocity of flow field, the coupling surface heat transfer coefficient simulated by 3-structure improvement projects are all increased in some degree comparing with the original models, and the whole block temperature is lowered in some degree than the original model, so as to verify the rationality of the structure improvement