Drag Reduction on External Surfaces Induced by Wall Waves

  • H. C. de Lange
  • Luca Brandt
Conference paper
Part of the ERCOFTAC Series book series (ERCO, volume 15)


Drag-reduction can be achieved by delaying of the onset of a turbulent flow as well as quenching turbulence itself. Due to the highly local nature of turbulent events and the rapid nature of breakdown a sensor-less (open-loop) strategy is highly preferable, since it prevents the necessity of large numbers of fast sensor/actuator combinations. Thus far, the success of the control strategies for boundary layer flows is limited and for bypass-transition none of the strategies has been successful. However, recent investigations indicate that sensorless (open-loop) control of transition to turbulence and drag reduction in turbulent flows is a feasible option.


Control Region Drag Reduction Streamwise Velocity Boundary Layer Transition Streaky Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringEindhoven University of TechnologyEindhovenThe Netherlands

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