Titlebook: Aeroacoustic Measurements; Christopher S. Allen,William K. Blake,James R. Und Book 2002 Springer-Verlag Berlin Heidelberg 2002 Aeroakustik

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978-3-642-07514-8Springer-Verlag Berlin Heidelberg 2002

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Experimental Fluid Mechanicshttp://image.papertrans.cn/a/image/150470.jpg

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Aeroacoustic Measurements978-3-662-05058-3Series ISSN 1613-222X Series E-ISSN 2197-9510

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https://doi.org/10.1007/978-3-663-01572-7ettings, by using beamforming techniques with sparse, wide-band phased arrays of microphones. The process, which was developed for this application at Boeing in the last few years, begins by measuring a full array cross-spectral matrix for each frequency of interest. A grid of potential source locat

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https://doi.org/10.1007/978-3-663-01572-7er outlines the basic mathematical relations used in the derivation of such techniques, introducing fundamental quantities such as the cross-correlation function and coherence function. These techniques are then applied to specific aeroacoustic examples, establishing the causal relationship between

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Kosten- und Logistikcontrolling mit SAP R/3,truction of its major components. Methods for characterization of facility performance are presented and applied to the specific tunnel described. Finally, the contributions of this facility, specifically in the area of a marine propeller’s response to inflow distortions, are summarized.