Work

Vibration and Noise of an Axial Flow Fan

Year: 2015

Type: article

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.

Source: Periodica Polytechnica Mechanical Engineering

DOI: 10.3311/ppme.7948

Authors: Tamás Kalmár-Nagy, Bendegúz Dezső Bak, Tamás Benedek, János Vad

Institution: Budapest University of Technology and Economics

Language: English

Topic: Aerodynamics and Acoustics in Jet Flows

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Hungarian Scientific Research Fund

Award: G7509984705