Journal of Northeastern University Natural Science ›› 2019, Vol. 40 ›› Issue (6): 862-868.DOI: 10.12068/j.issn.1005-3026.2019.06.019

• Mechanical Engineering • Previous Articles     Next Articles

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

XIE Yi1, XU Meng-tao1, LI Kui-ning2, ZHENG Yun1   

  1. 1. School of Automotive Engineering, Chongqing University, Chongqing 400044, China; 2. School of Power Engineering, Chongqing University, Chongqing 400044, China.
  • Received:2018-04-24 Revised:2018-04-24 Online:2019-06-15 Published:2019-06-14
  • Contact: XIE Yi
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Abstract: 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.

Key words: cooling fan, forward-swept angle, fan rotation speed, fan volume flow rate, fan resistance torque

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