Numerical Analysis of a Flow around a Cylindrical Body with Finite Span-Length
Details
Numerical simulation of a flow around a circular or square cylinder with finite span-length is carried out at Reynolds number of 1000 by using finite difference method. We have investigated three-dimensional flow structures for cylinders with aspect ratios of 5 and 8. The numerical result shows the time history of the coefficients of drag, lift and side forces. The flow pattern of the cylinder with aspect ratio of 5 is influenced by downwash more than that of aspect ratio 8. We confirm that the change of fluid forces closely relates to that of the flow pattern and the difference between fluid-dynamic force of a circular cylinder and a square cylinder.
