CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

An acoustic analogy and scale-resolving flow simulation methodology for the prediction of propeller radiated noise

Rickard Bensow (Institutionen för sjöfart och marin teknik, Marin teknik) ; Mattias Liefvendahl (Institutionen för sjöfart och marin teknik ; Extern)
Symposium on Naval Hydrodynamics (2016)
[Konferensbidrag, refereegranskat]

A methodology for the prediction of underwater radiated noise from ships is presented and applied to a configuration of a cavitating propeller, operating in behind condition. A scale resolved incompressible Large Eddy Simulation technique together with an acoustic analogy is em- ployed, with cavitation represented through a mixture assumption using a volume of fluid approach and explicit mass transfer modelling. The main configuration studied is the catamaran hull and propeller of a small research vessel in model scale. The hull and a complete geometrical model of the propeller is included, while the free surface is neglected in the simulation. Results of radiated noise from the complete configuration are presented and com- pared with experimental data. Further, as an intermediate step, the propeller alone on inclined shaft is studied for both cavitating and non-cavitating conditions.

Nyckelord: hydroacoustics, noise, cavitation, LES



Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2016-10-20. Senast ändrad 2016-10-20.
CPL Pubid: 243762