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2016•Journal of Flow Control Measurement &amp VisualizationOpen access

Control of Karman Vortex Street behind a Thin Airfoil at Low Reynolds Number

Shohei Takagi, Y. Konishi, Shigeru Obayashi, Asai Masato

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Abstract

To control the Karman vortex street formed behind a thin airfoil at a certain incidence, a control cylinder was placed at the suction side apart from the airfoil in the downstream region. Both smoke visualization and hot-wire measurements confirmed that the Karman vortex street was completely suppressed. The mechanism for suppression of the vortex street was examined with a hot-wire survey.

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To control the Karman vortex street formed behind a thin airfoil at a certain incidence, a control cylinder was placed at the suction side apart from the airfoil in the downstream region. Both smoke visualization and hot-wire measurements confirmed that the Karman vortex street was completely suppressed. The mechanism for suppression of the vortex street was examined with a hot-wire survey.

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Available abstract

To control the Karman vortex street formed behind a thin airfoil at a certain incidence, a control cylinder was placed at the suction side apart from the airfoil in the downstream region. Both smoke visualization and hot-wire measurements confirmed that the Karman vortex street was completely suppressed. The mechanism for suppression of the vortex street was examined with a hot-wire survey.

Key concepts: Kármán vortex street, Airfoil, Reynolds number, Vortex, Starting vortex, Mechanics, Vortex generator, Suction

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