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Numerical and experimental investigation of tubeaxial fan noise
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Date
2014
Author
Bodur, Ahmet
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In this study, the noise characteristic of a tube axial fan is investigated numerically and experimentally. The effects of blockage plate in front of the tube axial fan on the tube axial fan noise level are experimentally investigated. A computational aero-acoustic method is used to predict the flow induced fan noise. This method couples a flow solver and a wave equation solver. Unsteady flow analysis is performed with URANS (Unsteady Reynolds Average Navier Stokes Equation) method while acoustics radiation is computed with Ffowcs-Williams & Hawkings acoustics model in FLUENT. The numerical results is verified by a reasonably good agreement between numerical sound pressure level (SPL) of the tube axial fan in free-field and sound pressure level provided by acoustical measurement of the tube axial fan. The numerical and experimental studies give information about characteristics of the tube axial fan noise and about the effects of the blockage plate on fan noise level.
Subject Keywords
Electronic apparatus and appliances
,
Fans (Machinery).
,
Axial ventilators.
,
Computational fluid dynamics.
URI
http://etd.lib.metu.edu.tr/upload/12618274/index.pdf
https://hdl.handle.net/11511/24294
Collections
Graduate School of Natural and Applied Sciences, Thesis
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A. Bodur, “Numerical and experimental investigation of tubeaxial fan noise,” M.S. - Master of Science, Middle East Technical University, 2014.
