ETD

• bluff bodies
• computational fluid-dynamics
• RANS
• Von Karmàn
• vortex shedding

Turbulent flows are sources of the fretting way ruptures in realities such as the U-tube bundle's steam generator. To understand the forces due to a cross-flow around a bluff body (such as circular cylinders), simulation of the phenomena using URANS methods had been performed in this study. Different turbulence models with different settings had been performed to understand these parameters' influences in the force prediction. To understand the interactions between two different cylinders' wakes, the same settings had been tested for two different configurations (in tandem and side-by-side).