Abstract
The effects of uneven flow on the surface pressure coefficient in a finite row of four circular cylinders have been investigated by using the visualization of smoke-wire method and by measuring the surface pressure distribution. The experiments are carried out by the wind tunnel testing at a blockage ratio of 13.3% and the Reynolds number of 6000. The cylinder spacing ratio, defined as the ratio of the adjoining cylinders center-to-center spacing distance against the cylinder diameter, is kept 1.25. As the results, the visualization of the smoke-wire method displayed there were five patterns of the uneven flow, and the uneven flow patterns were divided into two groups. The surface pressure distribution exhibited the different result dependent on the uneven flow patterns.
