Abstract
Transition of an airfoil’s boundary layer from the laminar to the turbulent flow regime increases the overall drag of an airplane significantly. The major origin of this transition are Tollmien-Schlichting (TS) waves. Similar to the dolphin’s skin, a system that is capable to dampen TS waves locally is proposed here. A surface wave can interfere destructively with TS waves and thus delay transition towards the edge of the airfoil. For this purpose, an actuator array is combined with a thin membrane. The presented actuators were developed and improved continuously so that all requirements for the dampening of TS waves are fulfilled. Several actuators are cascaded in a compact manner and combined with a membrane and an array of sensors. The system has proven in wind tunnel experiments to be capable of dampening TS waves successfully and delaying transition.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Alekseeva, T.E., Semenov, B.N.: Hydrodynamic drag of the dolphin. J. Appl. Mech. and Tech. Phys. 12, 326–329 (1973)
Babenko, V.V.: Some hydrodynamic peculiarity of dolphins swimming (Russian title: Nekotorye gidrodinamičeskie osobennosti pla-vanija del’finov). Bionika 3, 19–26 (1969)
Biancuzzi, G., Haller, D., Lemke, T., Wischke, M., Goldschmidtboeing, F., Woias, P.: A Dynamic Linearization Concept for Piezoelectric Actuators. IEEE Trans. on Ultrason., Ferroelectr. and Freq. Control 58, 689–697 (2011)
Carpenter, P.W., Morris, P.J.: The effect of anisotropic wall compliance on boundary-layer stability and transition. J. Fluid. Mech. 218, 171–223 (1990)
Dogan, A., Uchino, K., Newnham, R.: Composite piezoelectric transducer with truncated conical endcaps “cymbal”. IEEE Trans. on Ultrason., Ferroelectr. and Freq. Control 44, 597–605 (1997)
Friese, C., Woias, P., Goldschmidtboeing, F.: Piezoelectric Microactuators in Polymer-Composite Technology. In: Proc. IEEE Transducers Conf., Boston, USA (2003)
el Hak, M.G., Tsai, H.M.: Transition and turbulence control. World Scientific, Singapore (2006)
Haller, D., Hempel, J., Paetzold, A., Losse, N., Peltzer, I., Nitsche, W., King, R., Woias, P.: A piezo-actuated closed loop MEMS system for active delay of transition. In: Proc. IEEE Transducers Conf., Denver, USA (2009)
Haller, D., Paetzold, A., Losse, N., Neiss, S., Peltzer, I., Nitsche, W., King, R., Woias, P.: Piezo-Polymer-Composite unimorph actuators for active cancellation of flow instabilities across airfoils. J. Intel. Mater. Syst. and Struct. 22, 465–478 (2011)
Haller, D., Paetzold, A., Goldin, N., Neiss, S., Goldschmidtboeing, F., Nitsche, W., King, R., Woias, P.: Cymbal type piezo-polymer-composite actuators for active cancellation of flow instabilities on airfoils. In: Proc. IEEE Transducers Conf., Beijing, China (2011)
Just, E., Bingger, P., Woias, P.: Piezo-Polymer-Composite Actuators - A New Chance for Applications. In: Proc. ACTUATOR Conf., Bremen, Germany (2004)
Kachanov, Y.S.: Physical mechanisms of laminar-boundarylayer transition. Annu. Rev. Fluid Mech. 26, 411–482 (1994)
Schlichting, H., Gersten, K.: Boundary-Layer Theory, 8th edn. Springer, New York (2000)
Sturzebecher, D., Anders, S., Nitsche, W.: The surface hot wire as a means of measuring mean and fluctuating wall shear stress. Exp. in Fluids 31, 294–301 (2001)
Wischke, M., Haller, D., Goldschmidtboeing, F., Woias, P.: Assessing the elastostriction and the electrostriction parameter of bulk PZT ceramics. Smart Mater. and Struct. 19, 085003 (2010)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer Berlin Heidelberg
About this chapter
Cite this chapter
Haller, D., Neiss, S., Kroener, M., Woias, P. (2012). Development and Fabrication of Active Microstructures for Wave Control on Airfoils. In: Tropea, C., Bleckmann, H. (eds) Nature-Inspired Fluid Mechanics. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 119. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28302-4_12
Download citation
DOI: https://doi.org/10.1007/978-3-642-28302-4_12
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-28301-7
Online ISBN: 978-3-642-28302-4
eBook Packages: EngineeringEngineering (R0)