Performance of a windsurfing sail under steady condition

KP Mok, P Zhou, J Hou, S Zhong, X Zhang, RCH So… - Ocean …, 2023 - Elsevier
This research investigates the aerodynamic forces and moments acting on a windsurfing sail
during steady sailing. We performed wind tunnel experiments on a scaled-down sail model …

Vortex flow of downwind sails

A Arredondo-Galeana, H Babinsky, IM Viola - Flow, 2023 - cambridge.org
This paper sets out to investigate the vortex flow of spinnaker yacht sails, which are low-
aspect-ratio highly cambered wings used to sail downwind. We tested three model-scale …

Detached Eddy Simulation of a sailing yacht

IM Viola, S Bartesaghi, T Van-Renterghem, R Ponzini - Ocean Engineering, 2014 - Elsevier
Wind tunnel experiments on a 1: 15th model-scale yacht were modelled with Detached Eddy
Simulations, which allowed drawing the topology of the turbulent structures in the sail wake …

[HTML][HTML] Water tunnel testing of downwind yacht sails

JBRG Souppez, IM Viola - Experiments in Fluids, 2024 - Springer
Downwind yacht sails, such as spinnakers, are low-aspect-ratio highly cambered wings with
a sharp leading edge. They are characterised by substantial three-dimensional flow …

Sharp transition in the lift force of a fluid flowing past nonsymmetrical obstacles: evidence for a lift crisis in the drag crisis regime

P Bot, M Rabaud, G Thomas, A Lombardi, C Lebret - Physical review letters, 2016 - APS
Bluff bodies moving in a fluid experience a drag force which usually increases with velocity.
However in a particular velocity range a drag crisis is observed, ie, a sharp and strong …

The leading-edge vortex of yacht sails

A Arredondo-Galeana, IM Viola - Ocean Engineering, 2018 - Elsevier
It has been suggested that a stable Leading Edge Vortex (LEV) can be formed from the
sharp leading edge of asymmetric spinnakers, which are high-lift sails used by yachts to sail …

Numerical investigation on the effects of heel on the aerodynamic performance of wing sails

R Zhang, L Huang, R Ma, G Peng, Z Ruan, C Wang… - Ocean …, 2024 - Elsevier
The utilization of wind-assisted propulsion technology could reduce ship fuel consumption
and emission of pollutants. In the study, the effect of steady heel angles on the aerodynamic …

Influence of wind gradient and ground effect on the aerodynamic forces of a Dynarig sail at large heeling angles

Q Zeng, X Lyu, W Cai, L Zhang, J Xu - Ocean Engineering, 2024 - Elsevier
As marine scientific research expands into deeper and increasingly remote oceanic regions,
unmanned sailboats have emerged as invaluable tools for enhancing hydrographic …

Experimental and numerical wind tunnel investigation of the aerodynamics of upwind soft sails

I Bayati, S Muggiasca, A Vandone - Ocean Engineering, 2019 - Elsevier
The present paper reports an experimental/numerical study about the aerodynamics of sails
in upwind conditions. This work is part of a wider research frame carried out in the recent …

The force generation mechanism of lifting surfaces with flow separation

IM Viola, A Arredondo-Galeana, G Pisetta - Ocean Engineering, 2021 - Elsevier
Fins, wings, blades and sails can generate lift and drag in both attached and separated flow
conditions. However, the common understanding of the lift generation mechanism holds …