Research update

This study delves into the effectiveness of bilge and fin keels, exploring their impacts on the efficiency of wind-powered vessels. Employing Particle Image Velocimetry (PIV) in a towing tank configuration, the research systematically analyses flow features generated by these keels and quantifies the hydrodynamic forces across various bilge and fin keel geometries. Building on prior research, this investigation extends its scope by tracking the path of shed vortices towards the propeller plane and evaluating the tested appendage configurations along global shipping routes. 

A comprehensive digital ship modelling is composed using the Albatros Software, incorporating laboratory measurements for hydrodynamic coefficients and vorticity induced effects. The impact of these keel types on ship performance in terms of aerodynamics and net propulsive contributions is presented and discussed. Results from laboratory experiments reveal distinct mechanisms through which each appendage type enhances hydrodynamic performance while at the same time identifying certain damaging interaction effects, providing valuable insights for future design optimizations.