Vortex induced vibrations of a pivoted finite height cylinder at low Reynolds number
| Autor: | César Treviño, Ivette Rodriguez, Mariano Vázquez, Daniel Pastrana, Guillaume Houzeaux, J.C. Cajas, Oriol Lehmkuhl |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Doctorat en Física Computacional i Aplicada, Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics, Barcelona Supercomputing Center, Universitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Física::Física de fluids [Àrees temàtiques de la UPC]
Computational Mechanics Pivoted cylinder Wake Vibració Vibration Reynolds number Physics::Fluid Dynamics symbols.namesake Aerodynamics Mathematical model Aerodinàmica Cylinder Fluid Flow and Transfer Processes Physics Mechanical Engineering Laminar flow Mechanics Condensed Matter Physics Vortex shedding Vortex Vortex induced vibrations (VIVs) Mechanics of Materials symbols Solid body |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | The vortex induced vibrations (VIVs) of a pivoted cylinder with finite height have been numerically investigated. A mathematical model is introduced and described, and the resulting equations are numerically solved for low Reynolds number Re = 100, 200 and several combinations of the governing parameters. Results on the solid body trajectories, the maximum amplitude of the oscillations, the hydrodynamic force coefficients, the wake structure, and details on the vortex shedding near the cylinder are presented and discussed. The numerical results compare reasonably well with the canonical system of VIV of two-degrees of freedom circular cylinder in the laminar regime. Also, qualitative similarities with closely related VIV systems at larger Re suggest interesting lines of future research. Analytical approximations for limiting cases are done and an excellent agreement with the numerical results is obtained. This work was partially financially supported by the “Ministerio de Economıa y Competitividad, Secretarıa de Estado de Investigacion, Desarrollo e Innovacion,” Spain (Ref. TRA2017-88508-R). D. Pastrana acknowledges the support of the CONACyT-SENER graduate fellowship program to study abroad 278102/439162. J. C. Cajas acknowledges the financial support of UNAM through the project PAPIIT-IA106120 and the access to supercomputing resources at Miztli: LANCAD-UNAM-DGTIC-379. |
| Databáze: | OpenAIRE |
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