Fluid Mechanics and Flight Mechanics

Design of single stage high efficiency fan based on arbitrary polynomial camber line airfoils

  • QIU Ming ,
  • HAO Yan ,
  • FAN Zhaolin ,
  • JIANG Xiong ,
  • CHEN Ti
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  • Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China

Received date: 2016-08-01

  Revised date: 2016-09-26

  Online published: 2016-10-14

Abstract

To adequately consider the blade lean and sweep influence on compressor performance in the stage of through-flow design, a through-flow design program is developed basing on streamline curvature approach, and a blade airfoils generating method is introduced basing on arbitrary camber lines. The camber lines is expressed on arbitrary rotary surface in the investigation. Basing on these methods, a single stage transonic fan is designed. The designing is done through the iteration between through-flow designing with blade geometry generating. The cruise state, in which the mass flow is 155 kg/s and pressure-ratio is 1.54, is treated as design state in the investigation. The results show that the pressure-ratio is 1.545, and rotor efficiency of 0.939, stage efficiency of 0.916 at design state. At the design speed, the stall margin is 17%, and the highest rotor (stage) efficiency is 0.945 (0.923). The mass flow is close to 400 kg/s, and efficiency increases a litter, pressure-ratio obviously rises at off state.

Cite this article

QIU Ming, HAO Yan, FAN Zhaolin, JIANG Xiong, CHEN Ti. Design of single stage high efficiency fan based on arbitrary polynomial camber line airfoils[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(5): 120657-120657. DOI: 10.7527/S1000-6893.2016.0262

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