• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Institut de Recherche de l’École navale (IRENAV)
  • View Item
  • Home
  • Institut de Recherche de l’École navale (IRENAV)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

A New Sensor to Characterize Flow Separation on a Hydrofoil

Communication avec acte
Author
VOISIN, Dimitri
SOULIER, Antoine
13094 Institut de Recherche de l'Ecole Navale [IRENAV]
ccBOT, Patrick

URI
http://hdl.handle.net/10985/21858
DOI
10.2218/marine2021.6779
Date
2021

Abstract

The performance of lifting bodies such as hydrofoils is determined by the flow state and particular attention should be paid to flow separation, as this greatly affects the generated lift and drag. Sailors are used to look at telltales (woolies) to trim their sails or steer their yacht. A French company developed an electronic telltale for sails based on a strain gauge activated by a silicon strand, with the appropriate signal processing to deliver the same information as a classical wool-made telltale, basically attached or separated flow. This new sensor proved useful when woolies are not visible or to deliver a signal to feed a control system, such as the autopilot for example. It was also applied to wind turbines to control the blade pitch. Mer Agit\'ee is now developing an equivalent hydrodynamic e-Telltale to be used on hydrofoils and rudders to help trimming and controlling. The present work presents the investigation of a foil section fitted with this new sensor in a water tunnel, combining force and PIV measurements with the sensor signal, on a wide range of angle of attack. Results show that the hydro e-Telltale enables detecting the flow separation and anticipate stall, and possibly allows for detecting the boundary layer transition to turbulence. In many cases of fluid flow over a lifting body, it is interesting to get some real-time feedback from the flow in order to help optimizing performance and controlling the system. The feedback from this new sensor could be used in a closed-loop controlling system, for example feeding a reduced-order model of the flow around the foil.

Files in this item

Name:
IRENAV_MARINE_2021_BOT.pdf
Size:
1.315Mb
Format:
PDF
View/Open

Collections

  • Institut de Recherche de l’École navale (IRENAV)

Related items

Showing items related by title, author, creator and subject.

  • Characterization of a flow separation sensor on a hydrofoil: the hydro e-telltale 
    Communication avec acte
    ccBOT, Patrick; ALAS, Rémi; VOISIN, Dimitri; SOULIER, Antoine; BRAUD, Caroline; MARCILLAT, Paul; PEZERIL, Baudoin; D'ARCO, François (HPYD, 2021)
    The performance of lifting bodies such as hydrofoils is determined by the flow state and particular attention should be paid to flow separation, as this greatly affects the generated lift and drag. Sailors are used to look ...
  • Transducteur adapté à la génération de forces en fonction de la vitesse d'écoulement d'un fluide 
    Brevet
    ccBOT, Patrick (Organisation Mondiale de la Propriété Intellectuelle, 2017)
    L’invention concerne un dispositif détecteur d’une vitesse seuil de déplacement d’un fluide, le dispositif détecteur comprenant un transducteur et configuré pour exercer une première force non nulle dans une première ...
  • Special Issue on Yacht Engineering 
    Direction d'ouvrage
    BOT, Patrick (Ocean Engineering, Elsevier, 2014-11)
    Editorial It is with much pleasure that we write the editorial for this special issue devoted to Yacht Engineering, arising from the 3rd International Conference on Innovation in High Performance Sailing Yachts (Innov’sail ...
  • Proceedings of the 2nd INNOVSAIL conference 
    Direction d'ouvrage
    BOT, Patrick (RINA, 2010)
    2nd International Conference on Innovation for High Performance Sailing Yachts INNOV’SAIL
  • Performance enhancement of downwind sails due to leading edge flapping: A wind tunnel investigation 
    Article dans une revue avec comité de lecture
    AUBIN, Nicolas; AUGIER, Benoit; DEPARDAY, Julien; SACHER, Matthieu; ccBOT, Patrick (Elsevier, 2018)
    This work presents a wind tunnel experimental study on the effect of the leading edge flapping on the aerodynamic performance of a spinnaker. Four J80-class spinnaker models, combining two different assembling structures ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales