Wang, YuzhouSinger, JonathanBau, Haim H.2023-05-222023-05-2219922010-08-16https://repository.upenn.edu/handle/20.500.14332/39912It 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.EngineeringMechanical EngineeringArticle