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Résumé of important results presented at the third turbulent drag reduction working party

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Abstract

A working party on drag reduction in turbulent boundary layers was held at ONERA/Chatillon, France during September 29–30, 1988. Two passive methods were discussed, in particular: internal manipulators, or “riblets”, (surface modification in the form of longitudinal striations) and external manipulators, or “LEBU's” also described as Outer Layer Devices, blades or ribbons, consisting of thin flat plate or aerofoil section devices embedded within the flow. Experimental as well as theoretical research was presented. This paper summarizes the results of this work and thus provides an overview of the current state of such research in Europe.

Résumé

Une réunion sur la réduction de traînée dans les couches limites turbulentes a été tenue à l'ONERA/Chatillon, France les 29–30 Septembre 1988. Deux méthodes passives furent essentiellement considérées, faisant appel aux manipulateurs internes, soit “riblets”, (modification de la surface sous la forme de fines rainures longitudinales) et aux manipulateurs externes “LEBU”, petites lamelles rectangulaires ou petits manipulateurs profilés insérés dans l'écoulement. Les résultats de recherches aussi bien expérimentales que numériques furent présentés. Cet article présente, en fait, un résumé de l'état actuel des recherches en Europe sur ce thème.

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Coustols, E., Savill, A.M. Résumé of important results presented at the third turbulent drag reduction working party. Applied Scientific Research 46, 183–196 (1989). https://doi.org/10.1007/BF00404816

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Keywords

  • Boundary Layer
  • Europe
  • Surface Modification
  • Outer Layer
  • Flat Plate