A Review of Bionic Structures in Control of Aerodynamic Noise of Centrifugal Fans

Wenqiang Zhou, Peijian Zhou (), Chun Xiang (), Yang Wang, Jiegang Mou and Jiayi Cui
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Wenqiang Zhou: College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China
Peijian Zhou: College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China
Chun Xiang: School of Mechanical and Automotive Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China
Yang Wang: College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China
Jiegang Mou: College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China
Jiayi Cui: College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China

Energies, 2023, vol. 16, issue 11, 1-24

Abstract: Due to the complexity of the working conditions and the diversity of application scenarios, the normal operation of a fan, whether volute tongue, volute shell surface, or blade, often encounters some unavoidable problems, such as flow separation, wear, vibration, etc.; the aerodynamic noise caused by these problems has a significant impact on the normal operation of the fan. However, despite the use of aerodynamic acoustics to design low-noise fans or the use of sound absorption, sound insulation, and sound dissipation as the main traditional noise control techniques, they are in a state of technical bottleneck. Thus, the search for more efficient methods of noise reduction is looking toward the field of bionics. For this purpose, this paper first analyzes the mechanism of fan noise in the volute tongue and blades, and then, this paper reviews the noise control mechanism and improvement research using the bionic structures in the volute tongue structure, the contact surface of the volute shell, and the leading and trailing edges of the blade in the centrifugal fan. Finally, the current challenges and prospects of bionic structures for aerodynamic noise control of centrifugal fans are discussed.

Keywords: bionic structure; aerodynamic noise control; centrifugal fan; non-smooth surface (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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