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Fluid Mechanics Seminar
Fluid-Structure Interactions in Supersonic Flows - A Look at Plate Vibration and Shock-Boundary Layer Interactions
3:30 pm
ASE 2.134
Abstract: With the evergrowing interest in hypersonic flight vehicles, more and more research focus is placed on characterizing the behavior of vehicle structures in this harsh flight regime. Lightweight considerations require engineers to design vehicles with thin outer walls, leading to structures prone to aerothermoelastic coupling. Excitation from engine noise or turbulence combined with boundary layer heating can lead to conditions where thin panels in the airframe fail due to high-cycle fatigue and/or buckling. These effects can be exacerbated in the presence of shock-boundary layer interactions that can be induced by geometric disturbances such as fins, control surfaces, or scramjet inlets.
This talk will give an overview of the behavior of thin plates in high-speed flows and will showcase the complexity of shock-boundary layer interactions in this context. The presentation is built around a currently ongoing experimental campaign in the Mach 2 / Mach 5 wind tunnel at UT Austin and will use experimental and simulation results to portray the exciting field of high-speed fluid-structure interaction.
Biography: Marc Eitner obtained his BS and MS in Germany and his PhD from UT Austin in 2021. He is now a Postdoc, currently working at the Department of Aerospace Engineering & Engineering Mechanics, University of Texas at Austin. His research focuses on supersonic fluid-structure interaction using high-speed optical techniques.
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