Research on Optimization of Rotating Circulation Field of Automotive Cooling Fan
As the most important part of the engine thermal management system in the long-distance transportation of freight trucks,the fan often needs to consume too much power for heat dissipation,and there is a problem of low efficiency and large power consumption.This paper takes the general purpose fan Z-490 as the prototype,studies the performance of the fan when the working condition is 3500r/min,and establishes a three-dimensional model.The flow field of cooling fan with or without rotating ring is simulated.In order to further reduce the adverse effects caused by blade tip gap,orthogonal test method is adopted,taking blade tip spacing,projection width and Angle as three horizontal factors,and fan efficiency and flow value under the same flow rate is selected as the evaluation index of fan performance.The results show that the optimized rotating ring size can improve the adverse effect of tip vortex flow,improve the efficiency and static pressure value,and it provides a reference for the design of the fan.
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