Math Speaker - Control Oscillations in Flow-Structure

We are delighted to welcome Dr. Irena Lasiecka, a distinguished math professor from the University of Memphis. She will explore the intriguing topic of controlling oscillations in flow-structure interactions and shed light on mathematics's pivotal role in understanding and manipulating these dynamic phenomena. Refreshments will be provided.

Location: UAH Shelby Center for Science and Technology. Room 107
Date: 02/29/2024 Time: 04:00 pm - 6 pm 

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Abstract :

Flow-structure interactions are ubiquitous in nature and in ev eryday life. Flow or fluid by interacting with structural elements can lead to oscillations, hence impacting stability or even safety. Thus problems such as attenuation of turbulence or flutter in an oscillating structure [Tacoma bridge], flutter in tall buildings, fluid flows in flexible pipes, in nuclear engineering flows about fuel elements and heat exchanger vanes are just few prime examples of rel evant applications which place themselves at the frontier of interests in applied mathematics. In this lecture we shall describe mathematical models describing the phenomena, These are represented by a 3 D Euler Equation coupled to a nonlinear dynamic elasticity on a 2 D manifold. Strong boundary-type cou pling at the interface between the two media is at the center of the analysis. This provides for a rich mathematical structure, opening the door to several unresolved problems in the area of nonlinear PDE’s, dynamical systems, re lated harmonic analysis and differential geometry. This talk aims at providing a brief overview of recent developments in the area along with a presentation of some new methodology addressing the issues of control and stability of such structures.