Influence of geometrical parameters on the hysteresis of flutter onset in confined configurations

Abstract The interaction between a flow and flexible structure can provide fascinating insight into the vortex shedding phenomenon any propagation mixing characteristics, which relate to plethora of applications such as heat transfer, snoring, musical instruments, or propulsion mechanisms. In this investigation, influence confinement on flapping behaviour flag is explored. particular, hysteresis, one least understood aspects flags, its sensitivity both flexural rigidity ratio addressed. For same test-section dimensions material, variations in thickness length enable range mass ratios ( $$M^*$$ M ∗ ) $$C^*$$ C be studied. Pressure measurements high-speed imaging allow quantification hysteretic behaviour. results demonstrate that although does not contribute existence relation critical reduced velocities sensitive degree confinement. Graphical abstract