A pressure-based technique for predicting regenerated noise levels in ventilation systems

Measured sound power levels generated by a variety of induct spoiler configurations have been collapsed on the basis of a method devised by Nelson and Morfey. A method of determining the duct clear area ratio and magnitude of the characteristic dimension coefficient from the measurement of the press...

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Veröffentlicht in:	Journal of sound and vibration 1990-07, Vol.140 (2), p.259-272
Hauptverfasser:	Oldham, D.J., Ukpoho, A.U.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustics Exact sciences and technology Fundamental areas of phenomenology (including applications) Noise: its effects and control Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Measured sound power levels generated by a variety of induct spoiler configurations have been collapsed on the basis of a method devised by Nelson and Morfey. A method of determining the duct clear area ratio and magnitude of the characteristic dimension coefficient from the measurement of the pressure loss has been devised. The non-dimensional spectra produced have been used to predict the sound power levels generated by single-vane dampers. The predicted levels are in good agreement with measured levels.
ISSN:	0022-460X 1095-8568
DOI:	10.1016/0022-460X(90)90527-7