Acoustic Transducer of Turbulent Pressure Fluctuations in a Temperature-Stratified Medium

被引：1
|
作者：
Kudashev, E. B. [1 ]
Yablonik, L. R. [2 ]
Liu, Jian-hua [3 ]
机构：
[1] Russian Acad Sci, Space Res Inst, Moscow 117997, Russia
[2] Joint Stock Co II Polzunov Sci & Dev Assoc Res &, St Petersburg 191167, Russia
[3] China Ship Sci Res Ctr, Wuxi 214082, Jiangsu, Peoples R China
来源：
ACOUSTICAL PHYSICS | 2018年 / 64卷 / 01期
关键词：
turbulent boundary layer; pressure fluctuations; temperature-stratified medium; acoustic transducer; pyroelectric effect; FLOW NOISE;
D O I：
10.1134/S1063771018010116
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The operation of an acoustic transducer in a temperature-stratified medium is investigated. The formation of a response of piezoceramic transducers of pressure fluctuations under the action of temperature fluctuations in a working medium on the sensor element is considered. The attenuation of the temperature signal of a pressure transducer in a turbulent boundary layer is calculated numerically. The effect of distortions of the spectral levels of pressure fluctuations detected by a sound transducer in the field of temperature inhomogeneities is investigated for the example of measurements of turbulent pressure fluctuations in a boundary layer during vertical ascent of the device to the surface from a specified depth in a deep sea.
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页码：99 / 104
页数：6
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