DDES of Wetted and Cavitating Marine Propeller for CHA Underwater Noise Assessment

In this paper we present results of delayed detached eddy simulation (DDES) and computational hydroacoustics (CHA) simulations of a marine propeller operating in a cavitation tunnel. DDES is carried out in both wetted and cavitating conditions, and we perform the investigation at several propeller l...

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Bibliographic Details
Published in:Journal of marine science and engineering 2018-06, Vol.6 (2), p.56
Main Authors: Viitanen, Ville, Hynninen, Antti, Sipilä, Tuomas, Siikonen, Timo
Format: Article
Language:English
Subjects:
Acoustic excitation
Acoustic noise
Acoustics
Cavitation
cavitation simulation
Computer applications
Computer simulation
DDES
Detached eddy simulation
Flow structures
Fluid dynamics
Forces (mechanics)
Hydroacoustics
Investigations
Local flow
marine propeller
Methods
Model basins
Noise
Noise assessments
Numerical analysis
Propagation
Propellers
Simulation
SST k-ω model
Tunnels
turbulence modelling
Turbulence models
Underwater acoustics
Underwater noise
Vortices
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Summary:In this paper we present results of delayed detached eddy simulation (DDES) and computational hydroacoustics (CHA) simulations of a marine propeller operating in a cavitation tunnel. DDES is carried out in both wetted and cavitating conditions, and we perform the investigation at several propeller loadings. CHA analyses are done for one propeller loading both in wetted and cavitating conditions. The simulations are validated against experiments conducted in the cavitation tunnel. Propeller global forces, local flow phenomena, as well as cavitation patterns are compared to the cavitation tunnel tests. Hydroacoustic sources due to the propeller are evaluated from the flow solution, and corresponding acoustic simulations utilizing an acoustic analogy are made. The propeller wake flow structures are investigated for the wetted and cavitating operating conditions, and the acoustic excitation and output of the same cases are discussed.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse6020056