This paper presents simulations of a loosely supported cantilever tube subjected to turbulence and fluidelastic instability forces. Several time-domain fluid force models simulating the damping controlled fluidelastic instability mechanism in tube arrays have been presented. These models include the negative damping model based on the Connors equation, fluid force coefficient-based models (Chen and Tanaka and Takahara), and two semi-analytical models (Price and Pai¨doussis; and Lever and Weaver). Time domain modelling and implementation challenges for each of these theories were discussed. For each model the flow velocity and the support clearance were varied. Special attention was paid to the tube/support interaction parameters that affect wear, such as impact forces and normal work rate. As the prediction of the linear threshold varies depending on the model utilized, the nonlinear response also differs. The investigated models exhibit similar response characteristics for the lift response. The greatest differences were seen in the prediction of the drag response, impact force level and normal work rate. Simulation results show that the Connors-based model consistently underestimates the response and the tube/support interaction parameters for the loose support case.
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ASME 2009 Pressure Vessels and Piping Conference
July 26–30, 2009
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping
ISBN:
978-0-7918-4367-3
PROCEEDINGS PAPER
Time Domain Models for Damping-Controlled Fluidelastic Instability Forces in Tubes With Loose Supports
Marwan Hassan,
Marwan Hassan
University of New Brunswick, Fredericton, NB, Canada
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Achraf Hossen
Achraf Hossen
University of New Brunswick, Fredericton, NB, Canada
Search for other works by this author on:
Marwan Hassan
University of New Brunswick, Fredericton, NB, Canada
Achraf Hossen
University of New Brunswick, Fredericton, NB, Canada
Paper No:
PVP2009-77163, pp. 173-183; 11 pages
Published Online:
July 9, 2010
Citation
Hassan, M, & Hossen, A. "Time Domain Models for Damping-Controlled Fluidelastic Instability Forces in Tubes With Loose Supports." Proceedings of the ASME 2009 Pressure Vessels and Piping Conference. Volume 4: Fluid-Structure Interaction. Prague, Czech Republic. July 26–30, 2009. pp. 173-183. ASME. https://doi.org/10.1115/PVP2009-77163
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