Modeling simulation of flow over a rotating circular cylinder with vortex-induced vibration
Túlio Alves Rodrigues1; Elie Luis Martinez Padilla1; Jonatas Emmanuel Borges2
1 Federal University of Uberlândia; 2 Federal University of Mato Grosso
doi:10.20906/CPS/CILAMCE2017-0843
Resumo
The present work presents the analysis of incompressible flows around a circular cylinder with rotation with two degrees of freedom, whose Reynolds value was set at 150, varying at reduced speed. The validation of the results is also presented through comparison with literature data. A methodology was used combining the finite volume method and the immersed boundary method, the latter being used to represent the cylinder. In the time discretization,the fourth-order Runge-Kutta method was used, as well as the fractional step method for the pressure-velocity coupling. The results, based on the solution of the Navier-Stokes equations, include fields of vorticity, history of the position and mean position of the cylinder, variation of displacement amplitude with reduced velocity, variation of drag and lift coefficients and also the trajectory of the Cylinder with reduced velocity. By the results, it was possible to analyze the interference of the reduced velocity in the formation of structures, in other words, in the types of structures formed and at the moment in which they begin to modify the amplitude, influencing in the phenomenon of synchronization.
Palavras-chave: Fluid mechanics; Fluid structure interaction; Immersed boundary method; Finite volume method