Vibration and Noise of an Axial Flow Fan

  • Tamás Kalmár-Nagy Budapest University of Technology and Economics
  • Bendegúz Dezső Bak Budapest University of Technology and Economics
  • Tamás Benedek Budapest University of Technology and Economics
  • János Vad Budapest University of Technology and Economics

Abstract

We describe a mechanical/acoustic study of a short-ducted axial flow fan. The purpose is to compare mechanical noise to that caused by flow phenomena.
The eigenfrequencies of the fan are identified through measurement and finite element computations. The fan acoustics is evaluated by beamforming studies using the Phased Array Microphone technique. The acoustic measurement data is processed by the Rotating Source Identifier method. The modal analysis of the fan model and the acoustic experiments reveal that the fan noise is dominated by mechanical noise in the few hundred Hz range and rotating sources of broadband noise above.
Keywords: Axial flow fan, vibration, noise, phased array microphone (PAM), ROSI algorithm
Published online
2015-04-09
How to Cite
Kalmár-Nagy, T., Bak, B., Benedek, T. and Vad, J. (2015) “Vibration and Noise of an Axial Flow Fan”, Periodica Polytechnica Mechanical Engineering, 59(3), pp. 109-113. https://doi.org/10.3311/PPme.7948.
Section
Articles