Active Control of Fluid-Structure Interaction Systems

Assoc. Prof. Hui Tang
Department of Mechanical Engineering
The Hong Kong Polytechnic University

In this talk, the use of active control to change the dynamics of idealized fluid-structure interaction (FSI) systems will be introduced. Here the term “active control” means that the control is realized by injecting a small amount of energy into existing FSI systems. Compared to its counterpart, i.e., passive control, active control is adaptive and on-demand, and hence has a much wider operating range.

First, the control of wakes and vortex-induced vibrations of a circular cylinder using synthetic jets (SJs) will be introduced. As an associated phenomenon, lock-on of vortex shedding to a pair of SJs will be discussed.

Second, enhancement of flapping-foil aerodynamics using various active control methods, including SJs, leading-edge perturbations and adjustable flexibility, will be presented.

Last, the adoption of machine-learning methods on active closed-loop control of a cylinder flow system will be demonstrated.

The talk will be given in English

Mon, 27-05-2019, 16:30 (Gathering at 16:00)

Classroom 165, ground floor, Library, Aerospace Eng.

Light refreshments will be served before the lecture

Active Control of Fluid-Structure Interaction Systems