Comparison of flow structures in the wake region of a square cylinder or a U shape cylinder

Abstract

The literature survey reveals that there is no available flow structure study on effects of modifying a square cylinder to a U shape cylinder. In the present paper, flow structures and downstream wake behind a U Shape Cylinder (USC) and a Square Cylinder (SC) have been studied at Reynolds number of 18,100. Constant temperature hot wire anemometers (CTA) are employed to measure the wake properties downstream of the U shape cylinder and the square cylinder. The flow structures are investigated in terms of velocity components, turbulent kinetic energy and similarities and dissimilarities in coherent and incoherent structures are addressed in detail quantitatively.