An acoustic analogy and scale-resolving flow simulation methodology for the prediction of propeller radiated noise
Paper in proceedings, 2016

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.

hydroacoustics

cavitation

noise

LES

Author

Rickard Bensow

Chalmers, Shipping and Marine Technology, Marine Technology

Mattias Liefvendahl

Swedish Defence Research Agency (FOI)

Symposium on Naval Hydrodynamics

Chalmers Area of Advance - funding 2016

Chalmers, 2016-01-01 -- 2016-12-31.

Driving Forces

Sustainable development

Areas of Advance

Transport

Energy

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

Subject Categories

Fluid Mechanics and Acoustics

More information

Latest update

11/27/2018