Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

The Effects of Hydrophone End-Cap Extension on the Flow-Generated Noise

The Effects of Hydrophone End-Cap Extension on the Flow-Generated Noise The flow field around a hydrophone generates self-noise which may contaminate the sound-field detection by a hydrophone. Hence, four hydrophone dome models are designed, and the flow field and sound field around them are compared. The RNG k–ε turbulence model is used for steady calculation. The results show that the four models have a fine diversion effect, and there is no obvious vortex and circumfluence because of them. The Curle model is used to simulate the sound source calculation of the hydrophone dome. The leading edge area of each model is found as the main noise source. The large eddy simulation/FW-H hybrid method is applied for the acoustic field calculation. The flow noise around the four models is studied. By summarizing the results of different models, the rules of flow noise around the hydrophone domes are analyzed. The suggestions for the hydrophone dome design are given based on the comprehensive evaluation of the noise generated by each hydrophone dome. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acoustics Australia Springer Journals

The Effects of Hydrophone End-Cap Extension on the Flow-Generated Noise

Acoustics Australia , Volume 49 (3) – Sep 1, 2021

Loading next page...
 
/lp/springer-journals/the-effects-of-hydrophone-end-cap-extension-on-the-flow-generated-H0Ti8dmxhf
Publisher
Springer Journals
Copyright
Copyright © Australian Acoustical Society 2021
ISSN
0814-6039
eISSN
1839-2571
DOI
10.1007/s40857-021-00247-0
Publisher site
See Article on Publisher Site

Abstract

The flow field around a hydrophone generates self-noise which may contaminate the sound-field detection by a hydrophone. Hence, four hydrophone dome models are designed, and the flow field and sound field around them are compared. The RNG k–ε turbulence model is used for steady calculation. The results show that the four models have a fine diversion effect, and there is no obvious vortex and circumfluence because of them. The Curle model is used to simulate the sound source calculation of the hydrophone dome. The leading edge area of each model is found as the main noise source. The large eddy simulation/FW-H hybrid method is applied for the acoustic field calculation. The flow noise around the four models is studied. By summarizing the results of different models, the rules of flow noise around the hydrophone domes are analyzed. The suggestions for the hydrophone dome design are given based on the comprehensive evaluation of the noise generated by each hydrophone dome.

Journal

Acoustics AustraliaSpringer Journals

Published: Sep 1, 2021

Keywords: Dome; Numerical simulation; Flow noise; Sound pressure level

References