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3D Numerical Simulation on Flow Field Characteristic Inside the Large-Scale Adjustable Blade Axial-Flow Fan

  • Lin Wang
  • Kun Wang
  • Nini Wang
  • Suoying He
  • Yuetao Shi
  • Ming GaoEmail author
Conference paper
  • 223 Downloads
Part of the Environmental Science and Engineering book series (ESE)

Abstract

To explore a higher efficiency and lower noise operating condition of adjustable axial-flow fans, a three-dimensional (3D) numerical model is established to study the inside flow field distribution characteristics. Thus, it is indispensable extremely to study the flow field distribution characteristics inside axial-flow fans. In this study, the adjustable blade is installed at seven different angles \(\Delta \beta = 0^\circ , \pm 4^\circ , \pm 8^\circ , \pm 12^\circ\) to investigate the effects on the static pressure distribution in an adjustable blade axial-flow fan. The numerical results manifested that with the increase of the installation angle, the high-pressure region of the intermediate flow surface remains unchanged, but that of the top flow surface is movable. The average static pressure of the radial flow surface increases from the blade bottom to top, and the growth rate increases sharply at the highest 30% of blade. This study can provide guidance for the variable angle operation of axial-flow fans and lay a theoretical foundation for the further study of the evolution rules of aerodynamic noise under different blade angles.

Keywords

Adjustable blade Axial-flow fan Flow field characteristics Static pressure distribution Numerical simulation 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Lin Wang
    • 1
  • Kun Wang
    • 1
  • Nini Wang
    • 2
  • Suoying He
    • 1
  • Yuetao Shi
    • 1
  • Ming Gao
    • 1
    Email author
  1. 1.School of Energy and Power EngineeringShandong UniversityJinanChina
  2. 2.Shandong Electric Power Engineering Consulting Institute Corp, LTDJinanChina

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