Energy saving within shipping is gaining more attention due to environmental awareness, financial incentives, and, most importantly, new regional and international rules, which limit the acceptable emission from the ships considerably. One of the measures is installation of energy saving devices (ES...

The paper presents the ongoing work in the research project ProNoVi. The objective of the project is to improve the numerical and experimental methods for the prediction of noise and vibrations induced by a propeller operating behind ship hull in full-scale conditions. Based on the improved methods ...

This paper presents the results of CFD investigations into the hydrodynamics of a ducted azimuth propulsor operating in regular waves. Numerical simulations are conducted to quantify thrust losses and load oscillations experienced by the propulsor in waves of different height and magnitude, without ...

This paper describes a CFD based approach to the design of a Pre-Swirl Stator (PSS) to be used as Energy Saving Device (ESD) on a retrofit chemical tanker. The designed PSS is shown to deliver 4% power savings at vessel selfpropulsion condition through a relevant speed range in full scale. This is c...

In the present work, a generic ducted azimuth propulsor, which are frequently installed on a wide range of vessels, is subject to numerical investigation with the primary focus on performance deterioration and dynamic loads arising from the influence of oblique inflow and the presence of free surfac...

In the present study, the results of CFD simulations by the unsteady RANS method of the flow around a generic model of azimuthing ducted pushing thruster are presented and compared with the results of model tests. The calculations are performed with the propeller operating at the design pitch (P0.7/...