Summary
Two active wave cancellation (AWC) systems have been developed and investigated in the zero pressure gradient laminar wall boundary layer in order to study the effect on nonlinearity and three dimensionality of the travelling disturbances on the performance of such systems. Some minor improvement of the performance can by achieved by adding nonlinear or special three dimensional modelling capabilities to the system, however, at high computational costs. A variety of acoustical effects have turned out to play an important role in the limits of the achievable Tollmien-Schlichting wave attenuation by means of AWC systems.
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Opfer, H., Evert, F., Ronneberger, D., Grosche, FR. (2004). On the potential and the limitations of boundary-layer stabilization via active wave cancellation. In: Wagner, S., Kloker, M., Rist, U. (eds) Recent Results in Laminar-Turbulent Transition. Notes on Numerical Fluid Mechanics and Multidisciplinary Design (NNFM), vol 86. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-45060-3_17
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DOI: https://doi.org/10.1007/978-3-540-45060-3_17
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