Handbook of Engineering Acoustics by Gerhard Müller & Michael Möser

Handbook of Engineering Acoustics by Gerhard Müller & Michael Möser

Author:Gerhard Müller & Michael Möser
Language: eng
Format: epub
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg


14.3 Measures for Sound Reduction

14.3.1 Reduction of the Source Terms

14.3.1.1 Flow-Generated Sound

Strategies for constructional and operational measures aiming at the source term of airborne sound follow from its proportionality to the flow velocity. The mean flow velocity or the mass flow need to be taken as invariable constructional restraints. Therefore, the strategy must aim at reducing the ratio of maximum value over mean value of the flow velocity. This goal can be achieved byAppropriate shaping of intake ducts for uniform flow distribution, e.g., by suitable intake nozzles



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