Events Calendar

Astani Civil and Environmental Engineering Ph.D. Seminar

Speaker: Amir Eftekharian, Astani CEE Graduate Student

Talk Title: Numerical Simulations of Vortex Induced Vibrations of a Circular Cylinder under a Controlled Motion

Abstract:
Vortex induced vibration is the phenomenon of vibrating a structural system due to an asymmetric vortex shedding pattern caused by its interaction with a surrounding fluid flow regime. This vibration can be harmful to structures as it causes excessive motions, fatigue, and rupture in the system. Thus, vortex induced vibration is a design concern in many applications such as bridges, offshore structures, aerospace engineering, and power plants. This study has been focused on numerical simulation of vortex generation behind a circular cylinder in a subcritical flow when it is under a controlled oscillation. For this purpose, finite volume techniques along with different turbulence models have been used in order to solve the Navier Stokes Equations and predict the system response. A series of two and three dimensional simulations have been performed on stationary and oscillating cylinders as an attempt to reproduce the hydrodynamic forces on the cylinder resulted from the experimental studies with considering mesh refinements, time step, and computational costs. The result of this study shows the promising capabilities of numerical tools for a better understanding of complex fluid/structure interactions.

Location: Grace Ford Salvatori Hall Of Letters, Arts & Sciences (GFS) - 106

Audiences: Everyone Is Invited

Contact: Evangeline Reyes