Flow around a circular cylinder for steady and unsteady incident flow

What is it about?

This work concerns the unsteady flow around a cylindrical body (plain tube) which is responsible for the integrated forces acting on the body. We did measurements of the unsteady velocity field in the wake of the cylinder using a technique Particle-Image Velocimetry.

Featured Image

Why is it important?

Our study has revealed that the timing of of vortex shedding from a circular cylinder is directly linked to the frequency of vortex shedding. This finding has provided theoretical interpretation to counter-intuitive phenomena observed in vortex-induced streamwise vibrations of elastically-mounted cylinders, i.e. the fact that the response amplitude is minimal for conditions (reduced velocities) for which the forces acting on cylinder undergoing forced vibration are magnified.

Perspectives