Benoît Augier
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View article: Optimization and Multi-Model Approaches for Maximizing Ship Decarbonization
Optimization and Multi-Model Approaches for Maximizing Ship Decarbonization Open
Aligned with the International Maritime Organization's (IMO) aim to lower greenhouse gas emissions, the use of Wind-Assisted Ship Propulsion (WASP) in maritime transport is gaining increased attention. The study and optimization of WASP re…
View article: Flying shape and aerodynamics of a full-scale flexible Olympic windsurf sail
Flying shape and aerodynamics of a full-scale flexible Olympic windsurf sail Open
The 3D flying shape of a real-scale 8 square meters iQFOiL class windsurf sail is measured in steady state sailing configurations. The sea wind flow conditions are simulated in a large-scale wind tunnel and stereo camera imaging technique …
View article: How does sailor morphology affect Olympic windfoil performance?
How does sailor morphology affect Olympic windfoil performance? Open
International audience
View article: Optimising hydrofoils using automated multi-fidelity surrogate models
Optimising hydrofoils using automated multi-fidelity surrogate models Open
Lifting hydrofoils are gaining importance, since they drastically reduce the wetted surface area of a ship, thus decreasing resistance. To attain efficient hydrofoils, the geometries can be obtained from an automated optimisation process. …
View article: Fluid-Structure Interactions Response of a Composite Hydrofoil Modelled With 1D Beam Finite Elements
Fluid-Structure Interactions Response of a Composite Hydrofoil Modelled With 1D Beam Finite Elements Open
_ In this paper, the hydroelastic response of a NACA0015 composite hydrofoil is studied experimentally and numerically. The foil is made of composite materials with fibers not aligned with the span of the foil, which results in the occuren…
View article: Blade strain analysis from field measurements on a vertical axis wind turbine
Blade strain analysis from field measurements on a vertical axis wind turbine Open
In this paper, the 10 kW WindQuest Vertical Axis Wind Turbine (VAWT) has been instrumented by strain gauges during its trials in the Ifremer in situ test site of Brest to study the effects of the structural dynamic response of the blades u…
View article: Free-Surface Effects on Two-Dimensional Hydrofoils by RANS-VOF Simulations
Free-Surface Effects on Two-Dimensional Hydrofoils by RANS-VOF Simulations Open
Foiling yachts and crafts are both very sensitive to the flying height in terms of stability and performance, raising the scientific issue of the influence of the free-surface when the foil is at low submergence. This work presents numeric…
View article: Hydrofoil Optimization via Automated Multi-Fidelity Surrogate Models
Hydrofoil Optimization via Automated Multi-Fidelity Surrogate Models Open
Lifting hydrofoils are gaining importance, since they drastically reduce the wetted surface area of a ship hull, thus decreasing resistance.To attain efficient hydrofoils, the geometries can be obtained from an automated optimization proce…
View article: Free-Surface Effects on Two-Dimensional Hydrofoils by RANS-VOF Simulations
Free-Surface Effects on Two-Dimensional Hydrofoils by RANS-VOF Simulations Open
Foiling yachts and crafts are both very sensitive to the flying height in terms of stability and performance, raising the scientific issue of the influence of the free-surface when the foil is at low submergence. This work presents numeric…
View article: Free-Surface Effects on Two-Dimensional Hydrofoils by RANS-VOF Simulations
Free-Surface Effects on Two-Dimensional Hydrofoils by RANS-VOF Simulations Open
International audience
View article: Numerical and Experimental Comparison of Spinnaker Aerodynamics Close to Curling
Numerical and Experimental Comparison of Spinnaker Aerodynamics Close to Curling Open
When sailing downwind with a spinnaker, the “verge of curling” is one of the common recommendations that sailors follow for efficient sailing. Wind tunnel experiments on spinnaker models conducted by Aubin et al. (2017) in the Twisted Flow…
View article: To curl or not to curl : wind tunnel investigation of spinnaker performance
To curl or not to curl : wind tunnel investigation of spinnaker performance Open
This work presents a wind tunnel experimental study of the effect of curling on the spinnaker aerodynamic performance. Four spinnakers combining two different panellings and sail materials are tested at different wind speeds and wind angle…
View article: Numerical study of a flexible sail plan : effect of pitching decomposition and adjustments
Numerical study of a flexible sail plan : effect of pitching decomposition and adjustments Open
A numerical investigation of the dynamic Fluid Structure Interaction (FSI) of a yacht sail plan submitted to harmonic pitching is presented to analyse the effects of motion simplifications and rigging adjustments on aerodynamic forces. It …
View article: Experimental validation of unsteady models for wind / sails / rigging fluid structure interaction
Experimental validation of unsteady models for wind / sails / rigging fluid structure interaction Open
The aim of this paper is to present the work of experimental validation elements of the aero elastic and unsteady model ARAVANTI. Numerical and Experimental results comparison is made on the rigging and sails of a J80 sail boat. Yacht mode…
View article: TO CURL OR NOT TO CURL: WIND TUNNEL INVESTIGATIONS OF SPINNAKER PERFORMANCE
TO CURL OR NOT TO CURL: WIND TUNNEL INVESTIGATIONS OF SPINNAKER PERFORMANCE Open
This work presents a wind tunnel experimental study of the effect of curling on the spinnaker aerodynamic performance. Four spinnakers combining two different panellings and sail materials are tested at different wind speeds and wind angle…
View article: An hybrid approach for the comparison of VAWT and HAWT performances for floating offshore wind turbines
An hybrid approach for the comparison of VAWT and HAWT performances for floating offshore wind turbines Open
This article describes the experimental comparison of the DTU 10MW HAWT with the WindQuest 10MW VAWT scaled models when both fitted on the Nautilus-10 semi-submersible. For the campaign in Ifremer Wind&Wave tank, different rotor representa…
View article: Morphing Hydrofoil Model Driven by Compliant Composite Structure and Internal Pressure
Morphing Hydrofoil Model Driven by Compliant Composite Structure and Internal Pressure Open
In this work, a collaborative experimental study has been conducted to assess the effect an imposed internal pressure has on the controlling the hydrodynamic performance of a compliant composite hydrofoil. It was expected that the internal…
View article: Hydrodynamic identification of NAUTILUS FOWT platform from small scale tests
Hydrodynamic identification of NAUTILUS FOWT platform from small scale tests Open
A small-scale tank test campaign of the NAUTILUS offshore wind floating semisub-mersible platform was held at the Ifremer Deep Water Basin within the framework of the MaRINET 2 project. The support structure consists in four stabilized col…
View article: How to be the best at sail pumping
How to be the best at sail pumping Open
Pumping or flicking1 is often used by sailors to get extra propulsion while sailing (subject to restrictions by the racing rules2). Common unsteady sailing situations, due to crew action (e.g. manoeuver like gybing3) or environment conditi…
View article: Wind tunnel investigation of dynamic trimming on upwind sail aerodynamics
Wind tunnel investigation of dynamic trimming on upwind sail aerodynamics Open
An experiment was developed at the Yacht research Unit’s Twisted Flow Wind Tunnel (University of Auckland) to test the effect of dynamic trimming on three 60 IMOCA inspired main sails models in upwind configuration. This study presents dyn…