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为解决目前冷却风机工作时过热、过冷以及能耗较大的问题,设计了一种自动调角冷却风机.建立了新型冷却风机在最佳安装角时的三维模型,模拟仿真了风机内部流场,得到了风机叶轮静压力分布云图和风机运转流场内空气流线图,获得了风机流场内各项空气动力学参数.仿真结果表明:叶片压力面和吸力面上压力梯度分布均匀,叶轮对空气做功状况良好,径向速度对风机叶轮运动没有任何负面影响;通过改进风机翼型可减小流场内湍流动能、降低风机空气动力性噪声.研究结论中流场出口各项指标表明新型风机叶轮空气动力性能满足冷却风机设计要求.
In order to solve the problems of overheating, overcooling and high energy consumption, a self-adjusting cooling fan was designed to solve the problem of overheating, overcooling and energy consumption, and a three-dimensional model of the cooling fan with the best installation angle was established. Field, the static pressure distribution of the fan impeller and the flow field of the fan are obtained, and the aerodynamic parameters in the flow field of the fan are obtained.The simulation results show that the pressure gradient on the pressure surface and the suction surface of the blade are distributed evenly, The impeller is doing good work on the air and the radial velocity has no negative influence on the impeller movement. By improving the airfoil, the turbulent kinetic energy in the flow field can be reduced, and the aerodynamic noise of the fan can be reduced. New fan impeller aerodynamic performance to meet the cooling fan design requirements.