Flow visualization between two rectangular cylinders

Abstract

It is important to disclose the wake flow around cylinders for understanding the mechanisms of heat transfer enhancement in flow networks. An experimental study was performed to visualize the wake flow in the gap between two rectangular cylinders. Square and rectangular cylinders are selected at Reynolds number range of less than 600 in the experiment. The wake flows are visualized at a top view, side views and front views using the fluorescein dye illuminated by a laser light sheet. Different shapes of vortices are shown in the wake flows visualized at three views. Flow visualization allows a better understanding of vortex structures of flow in the gap between two rectangular cylinders.