Computational simulation of the flow-induced vibration of a circular cylinder subjected to wake interference |
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| Affiliation: | 1. Department of Mechanical Engineering, Poli, University of São Paulo, Av. Prof. Melo Morais, 2231, Cidade Universitária, São Paulo 05508-030, SP, Brazil;2. Department of Naval Engineering, Poli, University of São Paulo, Brazil;1. Department of Aerospace Engineering, Indian Institute of Technology Kanpur;2. Department of Mechanical Engineering, Indian Institute of Technology Kanpur;1. Institute for Turbulence-Noise-Vibration Interaction and Control, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, China;2. Key Lab of Advanced Manufacturing and Technology, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, China;1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China;2. School of Civil Engineering, University of Queensland, Brisbane, QLD 4072, Australia;1. Institute for Turbulence-Noise-Vibration Interaction and Control, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen Graduate School, Shenzhen, China;2. Key Lab of Advanced Manufacturing Technology, School of Mechanical Engineering and Automation, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, China |
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| Abstract: | In this work, we considered the flow around two circular cylinders of equal diameter placed in tandem with respect to the incident uniform flow. The upstream cylinder was fixed and the downstream cylinder was completely free to move in the cross-stream direction, with no spring or damper attached to it. The centre-to-centre distance between the cylinders was four diameters, and the Reynolds number was varied from 100 to 645. We performed two- and three-dimensional simulations of this flow using a Spectral/hp element method to discretise the flow equations, coupled to a simple Newmark integration routine that solves the equation of the dynamics of the cylinder. The differences of the behaviours observed in the two- and three-dimensional simulations are highlighted and the data is analysed under the light of previously published experimental results obtained for higher Reynolds numbers. |
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