Publication de 4 numéros par an
ISSN Imprimer: 1065-3090
ISSN En ligne: 1940-4336
Indexed in
FLOW VISUALIZATION OF PARALLEL VORTEX-AIRFOIL INTERACTION
RÉSUMÉ
The interaction of a spanwise vortex with a symmetrical airfoil has been studied experimentally at a Reynolds number of 2.5 × 104 based on the airfoil chord length. The smoke-wire visualization technique was used to examine the flow around the airfoil at angles of attack α = 0,5, and 10° for two different values of vertical offset between the vortex generator and the airfoil The results indicate an upwash effect on the airfoil as the counterclockwise vortex approaches the leading edge from left to right. The vortex-induced upwash causes the leading-edge separation for the airfoil at α = 10°, and the separation bubble formed on the upper surface increases in size during the passage of the vortex. In comparison with the head-on interaction, a larger scale of the vortex-induced separation bubble was observed for the case that the entire vortex core passes just above the airfoil at α = 10°, resulting in a flat plateau region on the upper surface pressure distribution.
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Golubev Vladimir, Nguyen Lap, Visbal Miguel, High-Fidelity Simulations of Transitional Airfoil Interacting with Upstream Vortical Structure, 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2011. Crossref
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Nguyen Lap, Golubev Vladimir V., Visbal Miguel R., Numerical Study of Transitional SD7003 Airfoil Interacting with Canonical Upstream Flow Disturbances, AIAA Journal, 56, 1, 2018. Crossref
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Zhong Yonghong, Fukami Kai, An Byungjin, Taira Kunihiko, Machine-learning-based reconstruction of transient vortex-airfoil wake interaction, AIAA AVIATION 2022 Forum, 2022. Crossref