EXPERIMENTAL INVESTIGATION OF THE CHARACTERISTICS OF THE FLOW AROUND AN ELLIPTIC CYLINDER IN THE PRESENCE OF A TRIPPING WIRE

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BAK KHOSHNEVIS A.A.; NAZARI S.; EZADI YAZDI M.J.

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Journal: FLUID MECHANICS AND AERODYNAMICS JOURNAL Year:2017 | Volume:5 | Issue:2 Page(s): 39-54

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Title

EXPERIMENTAL INVESTIGATION OF THE CHARACTERISTICS OF THE FLOW AROUND AN ELLIPTIC CYLINDER IN THE PRESENCE OF A TRIPPING WIRE

Author(s)

BAK KHOSHNEVIS A.A. | NAZARI S. | EZADI YAZDI M.J. | Issue Writer Certificate

Keywords

TRIP WIREQ2

DRAG COEFFICIENTQ1

WAKE OF ELLIPTIC CYLINDERQ1

HOT WIRE ANEMOMETRYQ2

Abstract

In this research, the behavior and characteristics of the wake of the flow around an elliptic cylinder at zero angle of attack in the presence of a tripping wire of 1 mm diameter were investigated experimentally. An aluminum elliptic cylinder with major axis, minor axis, and height of 42.4 mm, 21.2mm, and 390 mm, respectively, was used for this purpose. The cylinder model was examined in the test section of a blower type wind tunnel. The Reynolds numbers of the experiment, based on major axis were 25700 and 51400 for 10 m/s and 20 m/s speeds, respectively. Tripping wire placed symmetrically at both sides of the cylinder, and each were tested at angles of zero, 23.7, and 40.9 degrees with respect to the stagnation point. The DRAG COEFFICIENT of the smooth cylinder for both of the Reynolds numbers was about 0.6. The results indicate that in the best possible case, the DRAG COEFFICIENT for the 1 mm wire reduces by 56.5% at angle of the 23.7 degree. In the best case, it also reduces by 8.6% for angle of the zero degree, while in the worst case, the DRAG COEFFICIENT for angle of 40.9 degree increase by 20.7%.

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APA: Copy

BAK KHOSHNEVIS, A.A., NAZARI, S., & EZADI YAZDI, M.J.. (2017). EXPERIMENTAL INVESTIGATION OF THE CHARACTERISTICS OF THE FLOW AROUND AN ELLIPTIC CYLINDER IN THE PRESENCE OF A TRIPPING WIRE. FLUID MECHANICS AND AERODYNAMICS JOURNAL, 5(2 ), 39-54. SID. https://sid.ir/paper/245523/en

Vancouver: Copy

BAK KHOSHNEVIS A.A., NAZARI S., EZADI YAZDI M.J.. EXPERIMENTAL INVESTIGATION OF THE CHARACTERISTICS OF THE FLOW AROUND AN ELLIPTIC CYLINDER IN THE PRESENCE OF A TRIPPING WIRE. FLUID MECHANICS AND AERODYNAMICS JOURNAL[Internet]. 2017;5(2 ):39-54. Available from: https://sid.ir/paper/245523/en

IEEE: Copy

A.A. BAK KHOSHNEVIS, S. NAZARI, and M.J. EZADI YAZDI, “EXPERIMENTAL INVESTIGATION OF THE CHARACTERISTICS OF THE FLOW AROUND AN ELLIPTIC CYLINDER IN THE PRESENCE OF A TRIPPING WIRE,” FLUID MECHANICS AND AERODYNAMICS JOURNAL, vol. 5, no. 2 , pp. 39–54, 2017, [Online]. Available: https://sid.ir/paper/245523/en

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