Colloquium: Pedro Quesada Allerhand (FPP)
31 augustus 2020 09:00 - Locatie: Meeting Room 1, Faculty of Aerospace Engineering, Kluyverweg 1, Delft
An Experimental Investigation of Shock-Induced Panel Flutter Using Simultaneous PIV and DIC
The vibration of panel structural elements immersed in a supersonic flow is a poorly understood fluid-structure interaction (FSI) that can affect the performance and structural integrity of supersonic aircraft and spacecraft systems. These adverse effects are further amplified when a shock-wave/boundary-layer interaction (SWBLI) is formed over the panel. A better understanding of this phenomenon is therefore crucial for the design of future high-speed vehicles.
An experimental investigation of a SWBLI induced by an impinging oblique shock over a thin, rectangular panel in a Mach 2 freestream flow was conducted using simultaneous digital image correlation (DIC) and planar-particle image velocimetry (PIV). High-speed cameras were used to acquire full-field measurements of both the panel’s out-of-plane displacement and the flow’s velocity over a two-dimensional plane at 5 kHz. This setup enabled a time-resolved study of the relationship between the panel’s motion and the low-frequency dynamics of the flow.