基于无扇叶风扇的发动机冷却风扇的设计研究  

Design and Research on Engine Cooling Fan Based on Bladeless Fan

作　　者：张鹏程[1] 董小瑞[1] 王强[1] 石运才 

机构地区：[1]中北大学机械与动力工程学院,山西太原030051

出　　处：《中北大学学报（自然科学版）》2016年第5期476-481,500,共7页Journal of North University of China(Natural Science Edition)

基　　金：中国博士后基金资助项目(2011M500545)

摘　　要：无扇叶风扇可显著增加进风口的流量,将其应用于汽车发动机冷却系统,通过仿真分析其送风性能和冷却效果.首先对冷却风扇的三维模型使用Fluent软件进行流体仿真以分析空气流动情况并得到出风量.扩散面长度和外侧倾角这两个参数对风扇的送风性能有较大的影响,通过仿真计算获得了出口流量随这两参数的变化规律.最后建立了散热器的简化模型并检验冷却风扇的散热效果,结果表明在进风为20m/s的速度下,散热器温度降低约10℃,散热效果明显.Bladeless fan can increase mass flow of the inlet markedly.A new designed cooling fan based on air multiplier fan was applied to the car engine cooling system and simulated to observe cooling effect.The 3D model of the cooling fan was analyzed by Fluent software to get the situation of the air flow and mass flow.The length of adhesion surface and the outside dip angle are two important parameters for bladeless fan.And the law of outlet massflow with these two parameters was gotten through simulation.A simplified model of a radiator was launched to test the effect of the cooling fan.The results indicate that the temperature of the radiator dropped by 10℃at the speed of inlet air with 20m/s.The effect of heat dissipation is obvious.

关 键 词：无扇叶风扇 空气倍增器 发动机冷却系统 流体仿真 

分 类 号：TB126[理学—工程力学]