Abstract
A semi-automatic and active control of T-S waves and oblique waves is performed using an array of piezo-ceramic actuators attached on a flat-plate surface. The actuators generate counter waves to cancel the incoming instability waves. The actuator’s operating amplitudes and phases are successively updated using the velocity .uctuations monitored downstream by a rake of hotwires. It is shown that the system could weaken these waves when their sweep angles are less than 15 degrees. However, it has difficulty in controlling the waves of large sweep angles. Through the results from the experiment activating only one actuator, it is shown that the difficulty arises because the wave front of the waves generated by each actuator deforms into an arch.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
REFERENCES
A.S.W. Thomas. The control of boundary-layer transition using a wave-superposition principle. J. Fluid Mech., 137:233–250, 1983.
H. W. Liepmann, G. L. Brown and D. M. Nosenchuck. Control of laminar-instability waves using a new technique. J. Fluid Mech., 118:187–200, 1982.
J. Kim. Control of turbulent boundary layer. Phys. Fluids, 15:1093–1105, 2003.
D. Sturzebecher and W. Nitsche. Active cancellation of Tollmien-Schlichting instabilities on an unswept wing using multi-channel sensor actuator systems. Int. J. Heat and Fluid Flow, 24:575–583, 2003.
T. Sakai, K. Shibamoto, S. Izawa, A.K. Xiong and Y. Fukunishi. Active control of flow field structure in a transitional flat plate boundary layer. Proc. 4rd ASME.JSME Joint Fluid Eng., CD-ROM, 2003.
Y. Fukunishi, S. Izawa, and K. Morita. Development of a new device to control oblique waves in transitional boundary layers. Fluid Dyn. Res., paper accepted, 2004.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2006 Springer
About this paper
Cite this paper
Izawa, S., Sakai, T., Inasawa, A., Xiong, AK., Fukunishi, Y. (2006). TRANSITION CONTROL IN A FLAT-PLATE BOUNDARY LAYER. In: Govindarajan, R. (eds) IUTAM Symposium on Laminar-Turbulent Transition. Fluid Mechanics and Its Applications, vol 78. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4159-4_26
Download citation
DOI: https://doi.org/10.1007/1-4020-4159-4_26
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-3459-6
Online ISBN: 978-1-4020-4159-4
eBook Packages: EngineeringEngineering (R0)