Summary
An experimental study has been made of the concept of controlling boundary layer transition by superposition of anti-phase disturbances on the Tollmien-Schlichting (TS) waves developing in the Blasius boundary layer over a flat plate. The Tollmien-Schlichting waves were excited artificially by periodic suction and blowing through a spanwise slot in the surface of the plate. The anti-phase waves were generated through a second slot downstream of the first one. Phase and amplitude of these waves were adjusted by hand to obtain minimum amplitude of the resulting flow disturbances downstream of the excitation region. TS waves with initial amplitudes of up to 1.7 % of free-stream velocity were investigated. The parameters of the flat plate and the other experimental conditions allowed to investigate the complete development of the TS waves. For comparison, amplitude and phase of the TS waves were measured by using a single hot-wire sensor — the primary TS wave, the anti-phase TS wave and the wave resulting from superposition of both. The aim of this work is to discuss problems in optimum abatement of TS waves with dependence on amplitude and Reynolds number.
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References
LIEPMANN, H.W. and NOSENCHUCK, D.M.; Active control of laminar-turbulent transition. Journal of Fluid Mechanics, vol. 118, 1982, pp. 201–204.
MILLING, R.W.; Tollmien-Schlichting wave cancellation. Physics of Fluids, vol. 24, 1981, pp. 979–981.
THOMAS, A.S.W.; The control of boundary-layer transition using a wave-superposition principle. Journal of Fluid Mechanics, vol. 137, 1983, pp. 233–250.
GILEV, V.M. and KOZLOV. V.V.; Use of small localized wall vibrations for control of transition in the boundary layer. Fluid Mechanics — Soviet Research, vol. 14, 1985, pp. 50–54.
GILEV, V.M. and KOZLOV. V.V.; Effect of alternating injection and suction on transition in the boundary layer. Fluid Mechanics — Soviet Research, vol. 16, 1987, pp. 61–67.
HERBERT, Th.; Secondary instability of boundary layers. Annual Review of Fluid Mechanics, vol. 20, 1988, pp. 487–521.
KLEBANOV, P.S.; TIDSTROM, K.D.; SARGENT, L.M.; The three-dimensional nature of boundary-layer instability. Journal of Fluid Mechanics, vol. 12, 1962, pp. 1–34.
LAURIEN, E. and KLEISER, L.; Numerical simulation of boundary-layer transition and transition control. Journal of Fluid Mechanics, vol. 199, 1989, pp. 403–440.
TENG, Y.-G. and GROSCHE, F.R.; A preliminary study of control of boundary layer transition by active wall motion. DLR-IB 222–90 A 27, 1990.
ZHOU, A. and GROSCHE, F.-R.; Experimental study on active control of boundary layer by a multiple slot blowing/suction system. DLR-IB 223–94 A 33, 1994.
SARIC, W. S.; Low-speed experiments: requirements for stability and measurements. In Hussaini, M.Y. and Voigt, R.G.: Instability and transition. Springer-Verlag, N.Y., 1990.
NISHIOKA, M.; Some fundamental problems on transition to wall turbulence. IUTAM Symposium, Sendai/Japan, pp. 15–26, 1994.
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© 1997 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden
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Gölling, B., Grosche, FR. (1997). Experimental investigation of active (dynamic) control of hydrodynamic instability in a two-dimensional boundary layer. In: Körner, H., Hilbig, R. (eds) New Results in Numerical and Experimental Fluid Mechanics. Notes on Numerical Fluid Mechanics (NNFM), vol 60. Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-322-86573-1_21
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DOI: https://doi.org/10.1007/978-3-322-86573-1_21
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
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