FLOW AROUND A SQUARE CYLINDER WITH WAVY SPLITTER PLATE PLACED UPSTREAM
Mehmet SEYHAN, Mustafa SARIOGLU and Yahya Erkan AKANSU
This study is focused on the reduction of aerodynamic forces acting on a wavy shape splitter plate placed upstream of a square cylinder. Experiments have been carried out for Reynolds numbers ranging 6200 to 27000 at an attack angle of 0. Five different wavy shaped plates and four different straight splitter plates are used. The drag and lift force measurements have been implemented by using a load cell. Drag reduction of wavy shaped Model 3 having an amplitude of 12 mm, a wavelength of 25 mm and a total length of 30 mm is obtained nearly 50 as compared to the single square cylinder. With increasing plate length, there is an inverse relationship between Strouhal number and the drag coefficient. For all straight and wavy plate models, Strouhal number is widely independent from Reynolds number changing from 6200 to 27000.