Ducted fan noise control

2009 ◽  
Author(s):  
Xuxin Ma
Keyword(s):  
Noise Control ◽  
Fan Noise ◽  
Ducted Fan

Fan noise control

1996 ◽  
pp. 161-174
Author(s):  
Thomas M. Bordas
Keyword(s):  
Noise Control ◽  
Fan Noise

Active noise control on a large‐scale ducted fan with inlet wave‐number sensing

2000 ◽  
Vol 107 (5) ◽  
pp. 2800-2801
Author(s):  
Jerome P. Smith ◽  
Ricardo A. Burdisso ◽  
Daniel L. Sutliff ◽  
Laurence J. Heidelberg
Keyword(s):  
Large Scale ◽  
Noise Control ◽  
Active Noise Control ◽  
Wave Number ◽  
Ducted Fan ◽  
Active Noise

Study on Noise Control of Fan with Air Suction

2011 ◽  
Vol 138-139 ◽  
pp. 391-394
Author(s):  
Li Jun Wang ◽  
Zhi Yang Pan
Keyword(s):  
Power Loss ◽  
Noise Control ◽  
Power Level ◽  
Sound Power ◽  
Transmission Power ◽  
Fan Noise ◽  
Search Result ◽  
Sound Power Level ◽  
Pneumatic Device ◽  
Combine Harvester

Fan is a pneumatic device in the 4ZTL-1800 combine harvester threshing prior to cutting. Based on the prophase search result that fan noise is highest when fan rotates at 1200r/min, in order to decrease noise of it, sigle-microperferated-panel muffler, double-microperferated-panel muffler and interposition muffler were designed and tested. The results show that double-microperferated-panel muffler is best and sound power level of fan is decreased 11dB, and that interposition muffler is better, and that sigle-microperferated-panel muffler is worst to descrease fan noise. Through contrast on transmission power loss of different mufflers, cone-shaped double-microperferated-panel muffler is verified to be best for noise control of fan.

Prediction of tonal ducted fan noise

2016 ◽  
Vol 372 ◽  
pp. 105-132 ◽  
Author(s):  
J. de Laborderie ◽  
S. Moreau
Keyword(s):  
Fan Noise ◽  
Ducted Fan

scholarly journals Advanced Trailing Edge Blowing Concepts for Fan Noise Control

2012 ◽  
Vol 4 (1) ◽  
pp. 15-22
Author(s):  
CRUNTEANU Daniel ◽  
◽  
RIZEA Cezar
Keyword(s):  
Noise Control ◽  
Fan Noise ◽  
Trailing Edge

Industrial fan noise control using flow obstructions

2013 ◽  
Vol 133 (5) ◽  
pp. 3264-3264 ◽  
Author(s):  
Remy Oddo ◽  
Anthony Gérard ◽  
Michel Pearson ◽  
Adrien Amyotte ◽  
Patrice Masson ◽  
...  
Keyword(s):  
Noise Control ◽  
Fan Noise ◽  
Flow Obstructions

Active noise control for centrifugal and axial fans

2020 ◽  
Vol 68 (6) ◽  
pp. 490-500
Author(s):  
Cheng-Yuan Chang ◽  
Xiu-Wei Liu ◽  
Sen M. Kuo ◽  
Department of Electrical Engineering, Chung Y ◽  
Department of Electrical Engineering, Chung Y ◽  
...  
Keyword(s):  
Heat Dissipation ◽  
Noise Control ◽  
Active Noise Control ◽  
Least Mean Square ◽  
Motor Speed ◽  
Fan Noise ◽  
Multiple Channel ◽  
Active Noise ◽  
Centrifugal Fans ◽  
Axial Fans

Fans are widely used in industry for heat dissipation or airflow production. It is achieved by driving a motor of fan to rotate a number of blades. Most industrial fans can be categorized into one of two general types: centrifugal fans and axial fans. However, fan noise is loud when the motor speed is high. This article develops using active noise control (ANC) system to reduce noise from both centrifugal and axial fans. By integrating loudspeakers and microphones, we present multiple-channel feedback ANC structure with the filtered-X least mean square (FXLMS) algorithm to simultaneously reduce noise from the inlet and the outlet of the fans. Several realtime experiments verify that the proposed method and experimental setup not only reduces the narrowband noise but also achieves the global cancellation of the fan noise.

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