The Aerodynamic Characteristics at the Mid-span of a Circular Cylinder with Tangential Blowing

Waka, Ryoji; Yoshino, Fumio; Hayashi, Tsutomu; Iwasa, Tadashi

doi:10.1299/jsme1958.26.755

Cited by 3 publications

(3 citation statements)

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“…3, 2021 ducted. [18][19][20][21] Waka et al 20) reported that the flow at the middle span of a cylinder with an aspect ratio l=D ! 4 can be considered as a two-dimensional flow by only correcting the induction angle-of-attack.…”

Section: Methodsmentioning

confidence: 99%

“…3,2021 The lift coefficient, C L , is obtained as the components vertical to the primary jet of the integral value of the pressure distribution on the cylinder surface as determined in previous research. [5][6][7]…”

Section: Optimal Injection Angle and Jet Widthsmentioning

confidence: 99%

“…As the CCW has an extremely large lift coefficient, previous studies have focused on short takeoff, low fuel consumption, and noise reduction for short takeoff and landing. 4,5) Recently, CCW technology has been used to realize short takeoff and landing of flying boats for marine rescue operations.…”

Section: Introductionmentioning

confidence: 99%

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Jet Direction Control Using Circular Cylinder with Tangential Blowing

Zhang

Takahashi

Sato

et al. 2021

Trans. Japan Soc. Aero. S Sci.

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We propose a tangential blowing cylinder, a type of circulation control wing, to control the direction of a jet replacing a blade or a cascade. Flow characteristics including deflection are experimentally investigated. Specifically, visualization observations, velocity distribution measurements, and the effects of momentum ratio, injection angle, and location of the cylinder on the deflection angle of the jet are analyzed. The stalling at an angle-of-attack above 20°with a single blade impedes direction control for such large angles. However, the jet may be bent to approximately 90°by using the proposed tangential blowing cylinder. The optimal injection angle for controlling the jet direction and the unsteady characteristics downstream of the tangential blowing cylinder are also determined.

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