NAV 2022

Session

6B

17 Jun 2022, 11:15

17. Numerical modelling of the hydrodynamic response of a dual-chamber fixed Oscillating Water Column Wave Energy Converter through the meshless DualSHPhysics method

Mr Gael Anastas

17/06/2022, 11:15

Marine renewable energy

Paper

A numerical model of a dual-chamber Oscillating Water Colums (OWC) Wave Energy Converter (WEC) is built through the DualSPHysics software. This code is based on the Smoothed Particle Hydrodynamics (SPH) model, a Lagrangian meshless method where particles represent the flow, interact with structures, and exhibit large deformation with moving boundaries. A one phase approach – only water - is...

68. SHIP URN: UNIGE activities in the context of LIFE-PIAQUO Project

Prof. Stefano Gaggero (Università degli studi di Genova)

17/06/2022, 11:35

Environment protection and ship energy efficiency

Paper

In the last years, an increasing attention has been devoted to ships Underwater Radiated Noise (URN), with the progressive interaction of guidelines by international organizations such as IMO, Classification Societies voluntary notations, limits and incentives in specific areas. In this context, a large effort has been spent in the study of cavitating propeller noise since it represents the...

103. Optimal conceptual design using NSGA-II algorithm for Galápagos interisland service small craft including flaps

Dr Ruben Paredes (ESPOL Polytechnic University)

17/06/2022, 11:55

Conceptual and practical ship design

Paper

In early 2020, sea trials carried out in some interisland high-speed boats in Galapagos confirmed the need to improve the comfort of the passengers during those trips. Results from those tests showed very high levels of vertical acceleration which, according to ISO 2631 standard, provoke high negative effects on the passengers, as was directly observed. This project aims to design at...

36. Experimental Analysis of Cavitation Erosion on Blade Root of Variable Pitch Propeller

Afaq Ahmed Abbasi (Università degli Studi di Genova)

17/06/2022, 12:15

Experimental hydrodynamics

Paper

The aim of this study is to experimentally investigate the cavitation erosion on the blade root of four blade controllable pitch propeller. Experiments are carried out on a model scale propeller considering two different pitch settings of propeller. The soft paint technique is used to study cavitation erosion, exploiting also two standard cameras and one high speed camera to study the damage...