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Journal of Applied Fluid Mechanics، جلد ۹، شماره ۵، صفحات ۲۴۰۳-۲۴۱۱
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عنوان انگلیسی Dominant Vortex Structures in Transverse Jets
چکیده انگلیسی مقاله In this paper, formation and development of one of the most dominant vortex structures, namely, counter-rotating vortex pair (CVP) which is seen in the jet in crossflow are investigated numerically. Influences of the inclination angles between the nozzle(s) and channel on the CVP are presented for three inclination angles, =30, 60 and 90 at velocity ratio, R=2.0. Effects of the number of the nozzles on the evolution of CVP is analyzed by considering the single and three side-by-side positioned circular nozzles. In addition to the CVP, some secondary vortices are also reported by considered relatively a narrow channel because their existence cannot be showed in wider channel. Simulations reveal that higher the inclination angle the more jet penetration into the channel in all directions and increasing the inclination angle causes larger CVPs in size. Although the flow structure of the CVP formed in the single and three side-by-side nozzles are similar their evolution is quite different.
کلیدواژه‌های انگلیسی مقاله Transverse jet, rotating vortex pair (CVP), Turbulent flow, Counter, Computational fluid dynamics (CFD)
نویسندگان مقاله S. Bayraktar |
Yildiz Technical University, Department of Naval Architecture and Marine Engineering, 34349 Istanbul, Turkey

T. Yilmaz |
Yildiz Technical University, Department of Naval Architecture and Marine Engineering, 34349 Istanbul, Turkey

نشانی اینترنتی https://www.jafmonline.net/article_1809_7c1a8f0e06fd38513e3b3be322f7474d.pdf
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