On-board measurement techniques to quantify underwater radiated noise level

OCEAN ENGINEERING

卷:130

Article

Turkmen, Serkan¹  Aktas, Batuhan¹  Atlar, Mehmet¹  Sasaki, Noriyuki¹  Sampson, Rod¹  Shi, Weichao¹ 

[1] Newcastle Univ, Sch Marine Sci & Technol, Armstrong Bldg, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

关键词: Underwater radiated noise;    Propeller cavitation;    Full scale measurements;    Correlation method;    SONIC project;   

DOI  :  10.1016/j.oceaneng.2016.11.070

来源: Elsevier

【 摘 要 】

Cavitating ship propellers are known to be the dominant noise source contributing significantly to the underwater radiated noise (URN) level. Innovative measurement methods using on-board devices need to be further investigated as they offer a serious alternative to traditional methods in terms of cost-efficiency and practicality. This exploratory study combined simultaneous on- and off-board noise and vibration measurements with cavitation views captured by digital photography and high speed cameras.Comprehensive full-scale trials were conducted on Newcastle University's research vessel, The Princess Royal, in the framework of the FP7-EU project SONIC. On-board data were captured from multiple measurement systems (including, hull pressure sensors, accelerometers, optical devices, shaft strain gauges) provided by SONIC project partners CETENA, Wartsila, University of Southampton and Newcastle University. A new semi-empirical correlation method based on cavitating propeller pressure fluctuation and the URN level was established. Results offer clear evidence of successfully estimating URN with on-board measurements up to the middle frequency region where the blade passing fundamental and low harmonic frequencies occur. These illuminating insights reported in this paper provide valuable benchmark sea trial data in full scale.

【 授权许可】

Free