Skip to main content

MARIN PAPER INVESTIGATES NOISE FROM PROPELLER CAVITATION

Friday, August 21, 2020 

Research organisation Marin of The Netherlands has produced a paper on measurement of underwater radiated noise measurements of a cavitating propeller, written in collaboration with other global research institutes.

Mitigation of shipping noise is a topical issue in marine engineering because of the dramatic increase in the levels of anthropogenic underwater noise and its impact on marine life. In recent years, hydro-acoustic research has focussed on the development of reliable methods for predicting underwater radiated noise (URN) due to cavitation, which is known to be the dominant contribution to the overall radiated noise spectrum of ships above the cavitation inception threshold. Model-scale measurements are currently considered the most reliable approach to study URN problems in marine engineering and are crucial for the verification and validation of numerical methods. However, their reliability is affected by several uncertainty sources for which suitable test procedures and post-processing techniques are needed.

As a means to better understand the accuracy and reliability of underwater radiated noise measurements, a round-robin test programme for an open water propeller setup has been organised within the Community-of-Practice 'Noise' of the HydroTesting Forum, with the aim of comparing results among several institutes (University of Genova UNIGE, University of Newcastle UNEW, NMRI, SSPA, KRISO, CNR-INM and Marin). The paper reports an overview of the programme and compares the different approaches and results.

Reader Comments (0)

There are currently no comments on this article. Why not be the first and leave your thoughts below.

Leave Your Comment

Please keep your comment on topic, any inappropriate comments may be removed.

Return to index

Web Analytics