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It is demonstrated experimentally and theoretically that through the use of an active (feedback) controller one can dramatically modify the nature of the flow in a toroidal thermal convection loop heated from below and cooled from above. In particular, we show how a simple control strategy can be used to suppress (laminarize) the naturally occurring chaotic motion or induce chaos in otherwise time-independent flow. The control strategy consists of sensing the deviation of fluid temperatures from desired values at a number of locations inside the loop and then altering the wall heating to either counteract or enhance such deviations.
Wang, Yuzhou; Singer, Jonathan; and Bau, Haim H., "Controlling Chaos in a Thermal Convection Loop" (1992). Departmental Papers (MEAM). 199.
Date Posted: 17 August 2010
This document has been peer reviewed.