Abstract
In this paper, two and three dimensional numerical flow analyzes around a circular cylinder over wide range of the Reynolds numbers are performed. Characteristics about flow around a circular cylinder are grasped, and effectiveness of numerical flow analysis is investigated to compare calculation results with experimental results. Investigations about axial domain and layer division in case of three dimensional analysis are performed. Flow field is assumed to be incompressible viscous flow that is described by the incompressible Navier-Stokes equations. A finite element method based on implicit time integration and equal-order interpolation is applied to the discretization method.