Simulating the Fluid-Structure Interaction of a Flexible Tube in an Array of Rigid Tubes
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
A7-2 Mini Symposium on Flow-induced Vibration in Nuclear Components

David Warnica (Hatch Ltd.)
Majid Maleki (Hatch Ltd.)
Alireza Hariri (Hatch Ltd.)
Heather Feldman (Electric Power Research Institute)


Two important single-phase mechanisms for flow-induced vibration of heat-exchanger tube bundles were used to demonstrate the capabilities of commercial software to simulate unsteady fluid- structure interactions (FSI). Reasonable agreement was obtained between the FSI simulations and experimental data for the onset of fluidelastic instability. There was also reasonable agreement between the FSI simulations and empirical correlations for the dynamic tube response to random turbulence excitation. Additional benefits of performing FSI simulations were the ability to characterize important features of the unsteady flow fields and hydrodynamic parameters such as viscous damping coefficients, which would otherwise require elaborate experimental measurements.

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