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 …

Characterization of the wake of a submarine propeller via large-eddy simulation

A Posa, R Broglia, M Felli, M Falchi, E Balaras - Computers & fluids, 2019 - Elsevier
Results of large-eddy simulations of a submarine propeller in open-water (isolated)
configuration are presented for three load conditions. An immersed boundary approach is …

Underlying mechanisms of propeller wake interaction with a wing

M Felli - Journal of Fluid Mechanics, 2021 - cambridge.org
The present study investigates the fundamental mechanisms of interaction between the
propeller wake vortices and an untipped non-lifting wing. The study consists of a …

Anisotropy of turbulence at the core of the tip and hub vortices shed by a marine propeller

A Posa - Journal of Fluid Mechanics, 2023 - cambridge.org
Large-eddy simulation on a grid consisting of 5 billion points was utilized to study the
properties of turbulence at the core of the tip and hub vortices shed by a marine propeller …

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 …

Influence of an upstream hydrofoil on the acoustic signature of a propeller

A Posa, M Felli, R Broglia - Physics of Fluids, 2022 - pubs.aip.org
The acoustic analogy is adopted to reconstruct the sound generated by a system consisting
of a hydrofoil and a downstream propeller. The data from high-fidelity large-eddy simulations …

Near wake of a propeller across a hydrofoil at incidence

A Posa, R Broglia - Physics of Fluids, 2022 - pubs.aip.org
Large-eddy simulations of a propeller operating upstream of a hydrofoil at incidence were
conducted on a cylindrical grid consisting of almost 4× 10 9 points. This manuscript, focused …

Spanwise distribution of the loads on a hydrofoil working in the wake of an upstream propeller

A Posa, R Broglia - Ocean Engineering, 2022 - Elsevier
The spanwise distribution of the loads acting on a hydrofoil working in the wake of a
propeller is analyzed both as a function of the propeller load and the incidence of the …

Flow over a hydrofoil at incidence immersed within the wake of a propeller

A Posa, R Broglia - Physics of Fluids, 2021 - pubs.aip.org
The flow over a hydrofoil in the wake of a marine propeller is studied using large-eddy
simulation on a cylindrical grid composed of 3.8 billion points. Four angles of incidence of …