航空学报 > 2017, Vol. 38 Issue (5): 120657-120657   doi: 10.7527/S1000-6893.2016.0262

基于任意多项式中弧线的单级高效率风扇设计

邱名, 郝颜, 范召林, 江雄, 陈逖   

  1. 中国空气动力研究与发展中心 计算空气动力研究所, 绵阳 621000
  • 收稿日期:2016-08-01 修回日期:2016-09-26 出版日期:2017-05-15 发布日期:2016-10-14
  • 通讯作者: 邱名 E-mail:qiu_ming_abc@163.com

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

QIU Ming, HAO Yan, FAN Zhaolin, JIANG Xiong, CHEN Ti   

  1. Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2016-08-01 Revised:2016-09-26 Online:2017-05-15 Published:2016-10-14

摘要:

为了在压气机通流设计阶段考虑叶片弯掠效应,开发了基于流线曲率法的通流设计程序,提出一种基于四次多项式的任意中弧线叶片造型方法,并推导了任意回转面上的中弧线表达式。以此方法为基础,采用通流设计与叶片造型相互迭代的方式开展大流量跨声速风扇设计研究。此风扇级的设计点为巡航状态,设计流量为155 kg/s、压比为1.54。研究结果表明:在设计状态,此风扇级的总压比为1.545,转子和级效率分别为0.939、0.916;在设计转速下,失速裕度为17%,转子和级最高效率分别为0.945、0.923;在起飞状态,流量接近440 kg/s,效率与巡航状态相当,压比高于巡航状态。

关键词: 跨声速风扇, 流线曲率法, 叶片弯掠, 大流量风扇, 高效率风扇, 任意中弧线叶型, 多项式中弧线

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.

Key words: transonic fan, streamline curvature method, blade lean and sweep, high mass flow fan, high efficiency fan, arbitrary camber line airfoil, polynomial camber line

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