Study on the Aerodynamic Performance and Noise of Annular Impeller Axial Fans

WU Xianpeng; WEI Lai; LUO Dan; KANG Ruixiang; LIU Xiaomin

doi:10.7652/xjtuxb202509017

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Study on the Aerodynamic Performance and Noise of Annular Impeller Axial Fans

更新时间：2025-09-11

- Study on the Aerodynamic Performance and Noise of Annular Impeller Axial Fans
- Journal of Xi’an Jiaotong University Vol. 59, Issue 9, Pages: 177-186(2025)
- 作者机构：
  
  1.西安交通大学能源与动力工程学院， 710049，西安
  2.广东美的环境电器制造有限公司， 528425，广东中山
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202509017
  CLC： TH432.1;TK05
- Received：13 March 2025，
  
  Online First：20 June 2025，
  
  Published：10 September 2025
- 稿件说明：
移动端阅览
WU Xianpeng, WEI Lai, LUO Dan, et al. Study on the Aerodynamic Performance and Noise of Annular Impeller Axial Fans[J]. Journal of Xi’an Jiaotong University, 2025, 59(9): 177-186.
DOI：

WU Xianpeng, WEI Lai, LUO Dan, et al. Study on the Aerodynamic Performance and Noise of Annular Impeller Axial Fans[J]. Journal of Xi’an Jiaotong University, 2025, 59(9): 177-186. DOI： 10.7652/xjtuxb202509017.

摘要

为提高轴流风扇气动性能并降低其工作噪声，受环形螺旋桨结构启发，以风扇用轴流叶轮为研究对象，提出了一种新型的环状叶轮结构并给出其参数设计流程和方法。通过提取原型叶轮叶型基本参数，调整叶轮基元级型线，对扇叶部分进行几何重构。采用光顺曲线连接叶顶涡环结构完成环状叶轮设计。基于数值仿真计算方法研究了环状叶轮对风扇气动性能和气动噪声的影响机制。结合实验测试方法对环状叶轮轴流风扇设计的有效性进行验证。仿真结果表明，采用环状叶轮改善了叶片表面的压力分布状态及整机流场速度分布的均匀性，提高了风扇的有效送风距离；同时，涡环结构有效抑制了叶轮叶顶脱落涡的强度和扩散范围，减小了主流区域的湍动能强度。实验结果表明，相对于原型轴流风扇，同转速的3种工况下环状叶轮风扇最大风速均有提升，噪声及功率有所降低。在相同噪声工况条件下，环状叶轮风扇最大风速提升了20.0 m·min

-1

，功率基本不变。当最大风速保持不变时，环状叶轮风扇的噪声值最大降低了1.5 dB，功率最大降幅约为13.9%。

Abstract

To enhance the aerodynamic performance of axial fans and reduce their operational noise

inspired by the structure of annular propellers

this study proposes a novel annular impeller design for axial impellers used in fans

along with its parameter design process and methodology. By extracting the basic parameters of the prototype impeller profile and adjusting the basic shape of the impeller

the blade section is geometrically reconstructed. The design of the annular impeller is completed by

smoothly connecting the vortex ring structure at the blade tip. The influence mechanism of the annular impeller on the fan's aerodynamic performance and noise is studied using numerical simulation methods. The effectiveness of the design of the annular impeller axial fan is validated through experimental testing methods. Simulation results show that the use of the annular impeller improves the pressure distribution on the blade surface and the uniformity of the overall flow field velocity distribution

thereby enhancing the effective air delivery distance of the fan. Moreover

the vortex ring structure effectively suppresses the strength and diffusion range of the blade tip shedding vortex

reducing the turbulence intensity in the main flow area. Experimental results indicate that

compared to the prototype axial fan

under three operating conditions at the same rotational speed

the maximum airflow speed of the annular impeller fan increases while noise and power consumption decrease. Under the same noise condition

the maximum airflow speed of the annular impeller fan increases by 20.0 m·min

-1

with power consumption remaining relatively unchanged. When maintaining the same maximum airflow speed

the noise level of the annular impeller fan is reduced by up to 1.5 dB

with a maximum reduction in power consumption of approximately 13.9%.

关键词

Keywords

references

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