Performance Analysis And Structural Optimization Of Automotive Intercooler Based On CFD Technology

With the continuous development of the automotive industry and improvement, the depletion of petroleum and other non-renewable energy resources, the increasingly serious problem of pollution, vehicle emissions and pollution much attention, while the country’s strict automobile emissions standards, so that the engine exhaust emissions performance becomes a critical indicator of car design. Turbocharged cooling system not only can increase the output power of a car engine, and can reduce pollution, improve engine performance has a more important significance.Because of the large number of finned intercooler, the current performance of computer capability not meshing, the need for the intercooler core made porous medium model processing. Meanwhile, the flow field of the car intercooler is more complex, which makes experimental study has been some limitations. Therefore, three-dimensional CFD simulation software was applied in this paper, for a certain type of car intercooler’s louver fin local temperature field and pressure field analysis to obtain the viscous drag coefficient and inertial resistance coefficient desired porous media model as a whole needed to further their overall fluid analysis, the cooler unit and the local heat transfer within the whole flow field flow, get the intercooler outlet temperature and the import and export pressure drop. Compared with its corporate wind tunnel test data to verify the feasibility CFD- porous media theory.Finally, in the blinds the other parameters constant, based on the change in the angle of its windows, spacing and thickness, in six different conditions were simulation, heat transfer coefficient and the import and export pressure drop by comparing its comprehensive evaluation factor, the parameter combination with better performance is obtained, optimization model of its high heat transfer coefficient, pressure drop and export comprehensive heat transfer performance better than the original model. This provides a reference for the design of optimized intercooler.