前掠角对车用轴流式冷却风扇性能的影响  

Effect of Forward-Swept Angles on Performance of Axial Cooling Fans for Vehicles

作　　者：谢翌[1] 许孟陶 李夔宁[2] 郑云[1] XIE Yi;XU Meng-tao;LI Kui-ning;ZHENG Yun(School of Automotive Engineering,Chongqing University,Chongqing 400044,China;School of Power Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学汽车工程学院,重庆400044 [2]重庆大学能源与动力工程学院,重庆400044

出　　处：《东北大学学报（自然科学版）》2019年第6期862-868,共7页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金青年基金资助项目(51405045);重庆市重点产业共性关键技术创新专项(重点研发项目)(cstc2017zday-zdyf0139);重庆市科技计划项目(cstc2016jcyjA0494);中央高校基本科研业务费专项资金资助项目(CDJZR14110002)

摘　　要：建立了某车用冷却风扇不同前掠角参数化模型,并基于计算流体力学的方法对其流动进行了仿真,研究了不同风扇转速下,前掠角对冷却风扇流动、风量以及阻力矩的影响.在压力分布方面,研究结果表明:随着冷却风扇前掠角的增加,相同的转速下,风扇叶栅入口处,空气的平均压力不断升高,叶栅流道内,相邻叶片间升力面和吸力面间的压力梯度逐渐减小,同一叶片升力面同吸力面间的压差逐渐降低.在速度分布方面,随着前掠角的增加,相同的转速下,风扇叶栅入口处,空气的流速逐渐减小,叶栅流道内,空气速度的增加逐渐减小.在风扇性能方面,随着前掠角的增加,相同的转速下,风扇风量逐渐减小,风扇阻力矩逐渐降低.The parameter models of forward-swept angles of cooling fans for vehicles were established. Their flow fields were simulated by using computational fluid mechanics method, and the effect of forward-swept angles on the flow field, volume flow rate and resistance torque of cooling fans was researched. In terms of pressure distribution, the results showed that at the same ration speed, the average air pressure at the inlet of cascade increases with the forward-swept angle and both the gradient and the pressure difference between blade lift-surface and blade suction surface falls with the forward-swept angle. In terms of velocity distribution, at the same rotation speed of cooling fans, the air velocity at the inlet of cascade decreases and the rise in the air velocity goes down with the forward-swept angle. In terms of the performance of cooling fans, at the same rotation speed, both fan volume flow rate and fan resistance torque reduce with the forward-swept angle.

关 键 词：冷却风扇 前掠角 风扇转速 风扇风量 风扇阻力矩 

分 类 号：TK432[动力工程及工程热物理—动力机械及工程]