Effects of Computational Geometry to the the Laminar Viscous Flow Around the Vertical Circular Cylinder

We numerically investigated the effects of computational domain to the unsteady laminar viscous flow around the vertical confined circular cylinder. The flow field and lift coefficient was computed numerically by finite volume method and laminar model. The results of study, we revealed mainly sinusoidal lift coefficient and flow structure as Reynolds number (Re) from 110 to 150, corresponding to block ratio of computational domain (AR - ratio of breadth to the cylinder diameter), 3 and 5. Due to effects of blockage ratio and geometry bottom behind the cylinder, the vortex shedding street development of flow was delayed.