Departmental Papers (MEAM)

Document Type

Journal Article

Date of this Version



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.


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.



Date Posted: 17 August 2010

This document has been peer reviewed.