Three-dimensional direct numerical simulations of vortex-induced vibrations of a circular cylinder in proximity to a stationary wall
Weilin Chen, Chunning Ji, Dong Xu, Zhimeng Zhang
Abstract
In this paper three-dimensional direct numerical simulations (3-D DNS) on vortex-induced vibrations of an elastically mounted circular cylinder near a stationary wall at a subcritical Reynolds number of 500 and a gap ratio of 0.8 are conducted. It is found that the three-dimensionality increases linearly with amplitude, leading to substantial variations in the vortex dynamics. The interactions of the vortices with the wall-generated boundary layer play significant roles in altering the cylinder vibration.
Topics & Concepts
CylinderReynolds numberVortexMechanicsVortex sheddingVibrationDirect numerical simulationPhysicsVortex-induced vibrationAmplitudeClassical mechanicsBoundary layerGeometryMathematicsAcousticsOpticsTurbulenceFluid Dynamics and Vibration AnalysisWind and Air Flow StudiesFluid Dynamics and Turbulent Flows