A neutrally buoyant, underwater acoustic intensity probe is constructed and tested. This sensor measures the acoustic particle velocity at two closely spaced locations, hence it is denoted a u-u intensity probe. A new theoretical derivation infers the acoustic pressure from this one-dimensional velocity gradient, permitting the computation of one component of acoustic intensity. A calibration device, which produces a planar standing-wave field, is constructed and tested. In this calibrator, the performance of the u-u intensity probe compares favorable to that of an acoustic intensity probe which measures both pressure and velocity directly.
Development of a velocity gradient underwater acoustic intensity sensor
Entwicklung eines Unterwasser-Geschwindigkeitsgradienten-Schallintensitätssensors
Journal of the Acoustical Society of America ; 106 , 6 ; 3178-3188
1999
11 Seiten, 10 Bilder, 1 Tabelle, 30 Quellen
Article (Journal)
English
akustisches Messverfahren , Unterwasserschalltechnik , Schallintensität , Schallsensor , Schallgeschwindigkeit , Schalldruck , Berechnungsverfahren , Kalibriervorrichtung (Eichwesen) , Betriebseigenschaft , Partikelströmung , Teilchengeschwindigkeit , Strömungsgleichung , Frequenzbereich , Design (Entwurf) , Kalibrator
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