Computational Method to Resolve Vortex-Induced Vibration of Cylindrical Body

Abstract

This paper explores the computational method to resolve the flow structures around cylindrical body in the stream. FVM (Finite Volume Method) is applied for the oscillatory behavior of the cylindrical body. In order to implement the movement of the body influenced by the hydrodynamic force, meshes around the moving body are reconfigured considering the new location at every time step of computation. Simulation of forced oscillation of the cylindrical body was first carried out for low Reynolds numbers and found that the computed forces are in good agreement with the previous studies. The results also reveal that there is a possibility of oscillatory forces occurrence with long period and large amplitude for a certain range of oscillatory frequencies, which was also found in a previous study and needed to be investigated further in the future due to its potential threat to the body.nt of the body influenced by the hydrodynamic force, meshes around the moving body are reconfigured considering the new location at every time step of computation. Simulation of forced oscillation of the cylindrical body was first carried out for low Reynolds numbers and found that the computed forces are in good agreement with the previous studies. The results also reveal that there is a possibility of oscillatory forces occurrence with long period and large amplitude for a certain range of oscillatory frequencies, which was also found in a previous study and needed to be investigated further in the future due to its potential threat to the body.