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Proceedings Paper

Low Reynolds number flow control via active material actuators
Author(s): Bruce F. Carroll; Lou Cattafesta; Andrew J. Kurdila; Carlos Fuentes; Xiang Zhao
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Paper Abstract

An experimental testbed is described that is used to study the feasibility of control of a class of flows that have low Reynolds numbers. The experimental testbed is comprised of a thin airfoil with a backward facing step machined into the upper surface. A thin PZT composite flap is mounted at the edge of the backward facing step to enable modification of the flow. Output measurement sensors consist of MEMs-based shear stress sensors, and conventional pressure taps, located on the surface of the airfoil. This paper derives a control framework for the synthesis of control methodologies for the testbed. A reduced order control model is obtained by employing reduced basis approximations of the two dimensional Navier-Stokes equations. Preliminary open loop experimental results are reported that illustrate the existence of convected large scale structures in the flow.

Paper Details

Date Published: 19 June 2000
PDF: 11 pages
Proc. SPIE 3984, Smart Structures and Materials 2000: Mathematics and Control in Smart Structures, (19 June 2000); doi: 10.1117/12.388779
Show Author Affiliations
Bruce F. Carroll, Univ. of Florida (United States)
Lou Cattafesta, Univ. of Florida (United States)
Andrew J. Kurdila, Univ. of Florida (United States)
Carlos Fuentes, Univ. of Florida (United States)
Xiang Zhao, Univ. of Florida (United States)

Published in SPIE Proceedings Vol. 3984:
Smart Structures and Materials 2000: Mathematics and Control in Smart Structures
Vasundara V. Varadan, Editor(s)

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