CHARACTERISTICS OF INTERACTING PROCESS WITH HORSESHOE VORTEX AND LONGITUDINAL VORTEX

Shizawa, Takaaki; Honami, Shinji; Tanahashi, Mamoru; Hara, Hiroyuki

Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN Imprimer: 1-56700-135-1

CHARACTERISTICS OF INTERACTING PROCESS WITH HORSESHOE VORTEX AND LONGITUDINAL VORTEX

Takaaki Shizawa Department of Mechanical Engineering, Science University of Tokyo 1-3 Kagurazaka Shinjuku-ku, Tokyo 1628601, Japan

Shinji Honami Department of Mechanical Engineering, Science University of Tokyo 1-3 Kagurazaka Shinjyuku-ku, Tokyo 162-8601, Japan

Mamoru Tanahashi Department of Mechanical and Aerospace Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan

Hiroyuki Hara Power System Engineering Center, Mitsubishi Heavy Industries, Ltd. 3-3-1 Minatomirai Yokohama-shi, Kanagawa 220-8401, Japan

Résumé

This paper presents the behavior of a passively controlled horseshoe vortex at the root of NACA0024 wing, which is established on a turbulent boundary layer. A pair of vortex generators of half delta wing is installed upstream of the wing. The characteristics of optimally controlled case of interacting process with longitudinal vortex and horseshoe vortex are carefully investigated. In case of Common Flow Up Configuration of vortex generator, the horseshoe vortex is not shifted from the wing, because the longitudinal vortex is restrained. In case of Common Flow Down Configuration, the interacting vortex that has strong vorticity by a pairing process is shifted far away from the wing, and the paring occurs in a short distance.

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