NDLI: Perturbations in the wall region using flush mounted piezoceramic actuators

Content Provider	Springer Nature Link
Author	Jeon, W. P. Blackwelder, R. F.
Copyright Year	2000
Abstract	The use of triangular shaped piezoceramic actuators in the near-wall region of turbulent shear flows is described. These actuators are very thin so that they can be flush mounted on the wall which greatly simplifies their application. The piezoceramic material was driven by an oscillating voltage that produced a mechanical deformation of the actuator. The magnitude of the deformation, and thus the amplitude of the disturbance, depended upon the voltage and geometry of the actuator. The forcing frequency was sufficiently high that the temporal aspect of the disturbance was rapidly dissipated. Measurements of the streamwise velocity component document the spatial extent of the perturbation.
Starting Page	485
Ending Page	496
Page Count	12
File Format	PDF
ISSN	07234864
Journal	Experiments in Fluids
Volume Number	28
Issue Number	6
e-ISSN	14321114
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-06-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Fluid Flow and Transfer Processes Physics and Astronomy Mechanics of Materials Computational Mechanics

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Perturbations in the wall region using flush mounted piezoceramic actuators