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Method of sound attenuation in centrifugal blowers
The Journal of the Acoustical Society of America, 2003A centrifugal blower housing that includes sound attenuating features to decrease the noise generated by the pressure fluctuations due to blade pass. The blower housing includes at least one sound attenuating cavity positioned along the exhaust section integrally formed as part of the blower housing. The sound cavity creates a sound dampening zone near
Leslie A. Lyons, David A. Fisher
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Dissimilarity Laws in Centrifugal Pumps and Blowers
Journal of Engineering for Power, 1961Two kinds of dissimilarities are discussed: (a) Planned dissimilarities between the different hydraulic types as expressed by the performance specific speed; (b) deviation from geometrical similarity which is “forced” to accommodate some special condition at the same performance specific speed.
A. J. Stepanoff, H. A. Stahl
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On sound generation mechanism by a centrifugal blower
The Journal of the Acoustical Society of America, 2002Centrifugal blower noise has often been modeled as dipoles and quadrupoles to account for the effects of fluid–structure interaction and turbulence as the impeller rotates. However, many experimental results have shown that sound powers from centrifugal blowers increase with speed to the power of 4–6, which implies the existence of a monopole ...
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Centrifugal Blower with High Inlet Resistance
Journal of Fluid Machinery, 2003Comprehensive study on a centrifugal blower for air-purifier involving a few physical filters for percolation process has been accomplished for an optimal design of the air handling system. The filtering medi a causes a flow resistance for induced flows by a rotating impeller. The present methodology is to adopt PIV system for velocity measurements and
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Housing effects on centrifugal blower noise
Journal of Sound and Vibration, 1974The sound power spectrum for a centrifugal blower operating at free delivery is characterized by enhancement at various frequencies owing to acoustical resonances in the blower housing. The lowest resonance frequency corresponds to the Helmholtz resonance and can be described by means of a lumped parameter analogy from which both the resonance ...
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High-capacity titanium centrifugal blower
Chemical and Petroleum Engineering, 1972Yu. D. Lyutov +2 more
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Unsteady Flow analysis of Centrifugal Blower
The Proceedings of the Fluids engineering conference, 2016Ken-ichi FUNAZAKI +2 more
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