Interactive wall turbulence controlAfter presenting boundary layer turbulence physics in a manner that emphasizes the possible modification of structural surfaces in a way that locally alters the production of turbulent flows, an account is given of the hardware that could plausibly be employed to implement such a turbulence-control scheme. The essential system components are flow sensors, electronic processors, and actuators; at present, actuator technology presents the greatest problems and limitations. High frequency/efficiency actuators are required to handle three-dimensional turbulent motions whose frequency and intensity increases in approximate proportion to freestream speed.
Document ID
19910028076
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Wilkinson, Stephen P. (NASA Langley Research Center Hampton, VA, United States)