Controlling Chaos in a Thermal Convection Loop

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Mechanical Engineering
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Wang, Yuzhou
Singer, Jonathan
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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.

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1992
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Suggested Citation: Wang, Yuzhou, Jonathan Singer and Haim H. Bau. (1992). Controling chaos in a thermal convection loop. Journal of Fluid Mechanics. Vol. 237. p.479-498. Copyright 1992 Cambridge University Press. http://dx.doi.org/10.1017/S0022112092003501
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