Suppression Of underwater Noise Induced by Cavitation

Informazioni relative al progetto

SONIC

ID dell’accordo di sovvenzione: 314394

Progetto chiuso

Data di avvio 1 Ottobre 2012

Data di completamento 30 Settembre 2015

Finanziato da

• Specific Programme "Cooperation": Transport (including Aeronautics)

Costo totale € 4 182 193,60

Contributo UE € 2 999 972,00

Coordinato da

STICHTING MARITIEM RESEARCH INSTITUUT NEDERLAND
Netherlands

Exploitable results

Exploitable results – Prediction of radiated noise from propellers

Result description

Development of computational tools for the prediction of radiated noise from propellers, with the utilisation of ANSYS FLUENT.

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Ship Underwater Radiated Noise Database

Result description

The database [http://vesselnoise.soton.ac.uk/] allows access to radiated noise data and the associated metadata, viewable online and also downloadable in spreadsheet format for later analysis. A significant issue related to radiated noise from shipping research is the lack of publically available measured noise data which can be used to inform the development of numerical models as well as for other research aims. It is recognised that in many cases the radiated noise level from a given ship may be commercially sensitive or confidential. In other cases where the data is not confidential, the owners may not have found a good platform to publish their results. The database has been designed in such a way to allow for both of these scenarios. In the case of confidential data, the metadata can be added without adding the actual radiated noise level data. The existence of the data can therefore be recorded so that researchers are aware of it but without breaching confidentiality. For data that are not protected by confidentiality then radiated noise level data can be uploaded as well.

Result type

* data

Link to result

http://vesselnoise.soton.ac.uk/

References

Exploitable results – Advanced experimental methodologies for the diagnostics of the nosie source in hydrodynamic facilities

Result description

Advancement of knowledge and development of advanced experimental tools for the diagnositcs of the noise sources in naval applications. Development and application of unconventional acquisition and processing techniques based on simultaneous acoustic measurements in the far field and detailed flow measurements in proximity of the noise source.

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Computational tools for ship hydrodynamics and hydroacoustics 1

Result description

Development of computational tools for ship hydrodynamics and hydroacoustics analysis with the utilisation of PROINS, K-NAVIS and KAA.

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Computational tools for ship hydrodynamics and hydroacoustics

Result description

Advancement of knowledge and development of computational tools for ship hydrodynamics and hydroacoustics. Development and implementation of an acoustic propagation model in OpenFOAM, with the utilisation of the computational framework of OpenFOAM.

Result type

* software/modelling tools

Link to result

References

Exploitable results – Prediction of Energy and Vibration trasmission to the ship foundation by machinery

Result description

Further development of existing methodologies and introduction of power trasmission estimation as substitute to the existing methodology.

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Noise Footprint and Mapping Tool (NFMT)

Result description

Software/Modelling Tool, Noise Footprint and Mapping Tool (NFMT), allows the creation of applicable sound maps: sound map is: a geographical representation of the Sound Pressure Level SPL (or Sound Exposure Level) due to a set of ships in a specified physical scenario. This level is the result of a weighted average over depth and frequency intervals: - Specified depth weighting (e.g., for species X) - Specified frequency weighting (e.g., for species X, or third octave band Y) - Averaged (or integrated) over a specified time period (e.g., 1 s, 1 hour, 1 day, 1 month, 1 year, 1 decade) -An sound map "footprint" can be produced for an individual vessel. A simplified and idealised environment is used and this may be of most relevance to the ship designer and modeller.

Result type

* Software/modelling tools

Link to result

www.sonic-project.eu/page/results.php

References

Exploitable results – SONIC / AQUO Guideline Document

Result description

Guidelines for Regulation on Underwater Noise from Commercial Shipping (publication Nov. 2015).

Result type

* guidelines/standards

Link to result

References

Exploitable results – SONIC Accurate prediction of noise in design stage of ships [summarises Project KO elements

Result description

Continuing development, validation and advancement of the art of using software models and model-scale test facilities to predict ship radiated noise. Specifically to support the design of cavitation noise reduced ships using physical evidence obtained by using specialist instrumented testing tanks and physical model hulls and propellers in various configurations together with full scale validation testing.

Result type

* Report

Link to result

References

Exploitable results – Prediction of cavitation pattern on propeller blades and hull pressure fluctuation assessment

Result description

Advancement of knowledge in the development of computational tools for the prediction of cavitation pattern on propeller blades, and hull pressure fluctuation assessment and extrapolation of experimental hydro-acoustic sound levels to unlimited domain. With the utilisation of computational tools Sbfs and QCM: Source definition for full scale propeller noise assessment.

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Noise Measurements in the Free Surface Cavitation Tunnel (FSCT)

Result description

Further development of knowledge of measurements within the Depressurised Wave Basin (DWB).

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Noise Measurements in the HYKAT - HSVA

Result description

Further development of knowledge of the HYKAT.

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Computational tools for ship hydrodynamics and hydroacoustics 2

Result description

Further development of ETV-model and MATUSIAK-model, knowledge on applicability and limitations of the models. With the utilisation of computational tools: PARNASSOS, PROCAL, EXCALIBUR, ETV-model, MATUSIAK-model.

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Noise Measurements in the Depressurised Wave Basin (DWB)

Result description

Further development of knowledge of measurements within the Free Surface Cavitation Tunnel (FSCT).

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Predict the radiated noise by a cavitating propeller

Result description

Development of a computational procedure to predict the radiated noise of a cavitating propeller with the utilisation of STAR-CCM+ and EXCALIBUR.

Result type

* exploitable scientific result

Link to result

References

Exploitable results – Methodology to predict propeller radiated noise, tonal and broadband.

Result description

Further development of CETENA methodology to predict propeller radiated noise, tonal and broadband. Utilisation of computational tools PROCAL, EXCALIBUR, ETV-model, commercial codes CFX ( or equivalent) SYSNOISE (or equivalent).

Result type

* software/modelling tools

Link to result

References