Flow Around a Circular Cylinder with Tangential Blowing near a Plane Boundary (2nd Report, A Study on Unsteady Characteristics) Shimpei OKAYASU, Kotar

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1 Flow Around a Circular Cylinder with Tangential Blowing near a Plane Boundary (2nd Report, A Study on Unsteady Characteristics) Shimpei OKAYASU, Kotaro SATO*4, Toshihiko SHAKOUCHI and Okitsugu FURUYA Department of Innovative Mechanical Engineering, Kogakuin University, Nishi-Shinjyuku, Shinjyuku-ku, Tokyo, Japan Key Words : Jet, Tangential Blowing, Circular Cylinder, Coanda Effect, Ground Effect, Unsteady Flow, Wake Oscillation, Flow Visualization, Velocity Fluctuation

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10 (1) Lockwood, V. E., Lift Generation on a Circular Cylinder by Tangential Blowing from Surface Slots, NASA Technical Note, D-244 (1960). (2) Dunham, J., A Theory of Circulation Control by Slot- Blowing, Applied to Circular Cylinder, Journal of Fluid Mechanics, Vol. 33, part 3, (1968), pp (3) Furuya, Y. and Yoshino, F., Aerodynamic Force Acting on a Circular Cylinder with Tangential Injection of Air, Transactions of the Japan Society of Mechanical Engineers, Vol. 41, No. 341 (1975), pp (4) Waka, R. and Yoshino, F., The Forced Reattachment of the Separated Shear Layer of a Circular Cylinder with Tangential Blowing, Transactions of the Japan Society of Mechanical Engineers, Vol. 53, No. 490 (1987), pp (5) Ueda, S. and Tanaka, H., Boundary Layer and Flow Control by Slot-Blowing Applied to a Flow Around a Circular Cylinder : 1st Report, An Experimental Study of Lift, Drag and Wake Control, Transactions of the Japan Society of Mechanical Engineers, Vol. 41, No. 350 (1975), pp (6) Ueda, S. and Tanaka, H., Boundary Layer and Flow Control by Slot-Blowing Applied to a Flow Around a Circular Cylinder, Transactions of the Japan Society of Mechanical Engineers, Vol. 42, No. 358 (1976), pp (7) Waka, R., Yoshino, F. and Nakai, K., The Effect of Tangential Blowing in a Separated Region on the Near Wake of a Circular Cylinder, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 56, No. 521 (1990), pp (8) Yoshida, Y., Sato, K. and Ono, Y., Wake Oscillation of Column Wall Jet in Uniform Flow, Journal of the Japan Society for Aeronautical and Space Sciences, Vol. 54, No. 630 (2006), pp (9) Lockwood, V. E., Effect of Groundboard Height on the Aerodynamic Characteristics of a Lifting Circular Cylinder using Tangential Blowing from Surface Slots for Lift Generation, NASA Technical Note, D-969 (1961). (10) Ishizuka, I., Kohama, Y., Kato, T. and Yoshioka, S., Experimental Investigations on the Ground Effect Characteristics of the U-shaped and V-shaped Wing Designs for the Aero-Train, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 72, No. 717 (2006), pp (11) Kano, I. and Yagita, M., Flow around a Rotating Circular Cylinder near a Moving Plane Wall, JSME International Journal Series B, Vol. 45, No. 2 (2002), pp (12) Okayasu, S., Sato, K., Shakouchi, T. and Furuya, O., Flow Around a Circular Cylinder with Tangential Blowing near a Plane Boundary : 1st Report, A Study on Fluid Force, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 73, No. 733 (2007), pp (13) Bearman, P. W. and Zdravkovich, M. M., Flow around a Circular Cylinder near a Plane Boundary, Journal of Fluid Mechanics, Vol. 89, part 1, (1978), pp (14) Newman, B. G., The Deflection of Plane Jets by Adjacent Boundaries-Coanda Effect. Boundary Layer and Flow Control, (1961), pp , Pergamon. (15) Neuendorf, R. and Wygnanski, I., On a Turbulent Wall Jet Flowing over a Circular Cylinder, Journal of Fluid Mechanics, Vol. 381(1999), pp (16) Yoshino, F. and Waka, R., Visualization of the Flow Around a Circular Cylinder with Tangential Injection, Report of the Faculty of Engineering, Tottori University, Vol. 8 (1977), pp

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