Validation of computational and experimental prediction methods for the underwater radiated noise of a small research vessel
Author Frans Hendrik Lafeber and Johan Bosschers
Title Validation of computational and experimental prediction methods for the underwater radiated noise of a small research vessel
Conference/Journal 13th International Symposium on Practical Design of Ships (PRADS), Copenhagen, Denmark
Paper no. ID105
Month September
Year 2016

Abstract
The underwater radiated noise of a small research vessel, The Princess Royal, has been predicted using computational methods and model tests and has been compared to full-scale data. For the model tests, a correction for the Lloyd’s mirror effect has been implemented in the analysis. The results are then compared to data from full-scale measurements. After correcting for the viscous scale effects on vortex cavitation, there is a good agreement between the model tests and full scale at the lowest speed. For the higher speeds (more cavita-tion), the agreement is good at the low and high frequency range, but there is a difference of about 10 dB between the model tests and full scale at mid frequency range.

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