Hydroacoustic analysis of a marine propeller using large-eddy simulation and acoustic analogy

A Posa, R Broglia, M Felli, M Cianferra… - Journal of Fluid …, 2022 - cambridge.org
The acoustic analogy is adopted to characterise the signature of a seven-bladed submarine
propeller, relying on a high-fidelity large-eddy simulation, performed on a computational grid …

Concise review: aerodynamic noise prediction methods and mechanisms for wind turbines

V Bhargava Nukala, CP Padhy - International Journal of …, 2023 - Taylor & Francis
Wind power plants are increasingly being installed across the world to combat energy
deficits and climate change. One of the policy constraints for installing wind turbine plants is …

Acoustic signature of a propeller operating upstream of a hydrofoil

A Posa, R Broglia, M Felli - Physics of Fluids, 2022 - pubs.aip.org
The Ffowcs-Williams and Hawkings acoustic analogy is utilized to analyze the signature of a
system consisting of a propeller and a downstream hydrofoil, mimicking a rudder at 0 …

The signature of a propeller–rudder system: Acoustic analogy based on LES data

A Posa, M Felli, R Broglia - Ocean Engineering, 2022 - Elsevier
The acoustic analogy is utilized to analyze the sound from a propeller–rudder system,
exploiting data from high-fidelity Large-Eddy Simulations, performed on a cylindrical grid …

Comparison between the acoustic signatures of a conventional propeller and a tip-loaded propeller with winglets

A Posa - Physics of Fluids, 2023 - pubs.aip.org
ABSTRACT The Ffowcs-Williams and Hawkings acoustic analogy is utilized to reconstruct
the acoustic signature of two marine propellers with and without winglets at the tip of their …

The acoustic signature of a propeller–hydrofoil system in the far field

A Posa, R Broglia, E Balaras, M Felli - Physics of Fluids, 2023 - pubs.aip.org
ABSTRACT Data from Large-Eddy Simulations on a grid consisting of 3.8 billion points are
utilized to reconstruct the acoustic far field of a propeller–hydrofoil system, using the Ffowcs …

[HTML][HTML] The acoustic signature of a rudder in the wake of a propeller: Comparison between infinite and semi-infinite approximations

A Posa, R Broglia, E Balaras, M Felli - … Journal of Heat and Fluid Flow, 2023 - Elsevier
The acoustic analogy is adopted to reconstruct the sound pressure levels from a propeller–
rudder system, using the database of instantaneous realizations of the solution from Large …

Acoustic far field of a propeller working in the wake of a hydrofoil

A Posa, M Felli, R Broglia - Physics of Fluids, 2023 - pubs.aip.org
ABSTRACT The Ffowcs-Williams & Hawkings (FWH) acoustic analogy is adopted to
reconstruct the acoustic far field of a system consisting of an upstream hydrofoil and a …

[HTML][HTML] Influence of the load conditions on the acoustic signature of a tip-loaded propeller with winglets

A Posa, R Broglia - Physics of Fluids, 2023 - pubs.aip.org
The Ffowcs-Williams and Hawkings acoustic analogy was exploited to reconstruct the
acoustic signature of a tip-loaded propeller with winglets across a range of working …

Mass-conserved solution to the Ffowcs-Williams and Hawkings equation for compact source regions

Z Zhou, Y Liu, H Wang, S Wang - Aerospace, 2023 - mdpi.com
A mass-conserved formulation for the Ffowcs-Williams–Hawkings (FW–H) integral is
proposed to suppress contributions of spurious mass flux to the far-field sound at very low …