NICOP ESMProp (DIT.AD019.008)
Thematic area
Engineering, ICT and technologies for energy and transportation
Project area
Tecnologie Marittime (DIT.AD019)Structure responsible for the research project
Institute of Marine Engineering (INM)
Project manager
MARIO FELLI
Phone number: 06502991
Email: mario.felli@cnr.it
Abstract
The project deals with a comprehensive experimental study of hydrodynamics and hydro-acoustics of marine propellers with the focus on:
1) understanding fundamental mechanisms for the wake instability of a marine propeller,
2) assessing the type and degree of influence that hull perturbation, onset flow unsteadiness, free surface and shear effects exerted on the wake evolution,
3) improving the comprehension of fundamental underlying mechanisms of propeller noise generation and propagation phenomena, and
4) investigating the influence of the wake dynamics on the radiated noise and the possibility to modulate the acoustic signature by wake control.
Goals
Perform a comprehensive experimental study of hydrodynamics and hydroacoustics of marine propellers with the focus on:
1) understanding fundamental mechanisms for the wake instability of a marine propeller,
2) assessing the type and degree of influence that hull perturbation, onset flow unsteadiness, free surface and shear effects exerted on the wake evolution,
3) improving the comprehension of fundamental underlying mechanisms of propeller noise generation and propagation phenomena, and
4) investigating the influence of the wake dynamics on the radiated noise and the possibility to modulate the acoustic signature by wake control. The proposed efforts are aligned with the Platform Design and Survivability focus area of the US Naval and Marine Corp S&T Strategic Plan. The research will be conducted in collaboration with the University of Iowa (Prof. P. Carrica), the George Washington University (Prof. E. Balaras), and the Naval Surface Warfare Center, Carderock Division (Dr. S. E. Kim). Objectives includes new knowledge-base on propeller hydrodynamics and hydroacoustics, state-of-the-art optical measurements techniques and data analysis methods, experiments for validation
Start date of activity
06/04/2015
Keywords
propeller noise, instability, vortex breakdown, optical techniques
Last update: 08/06/2025