Abstract
The vortex wake generated behind circular cylinders in side-by-side arrangement is investigated by discrete vortex calculations in comparison to flow visualization experiments. The discrete vortex calculation is based on the inviscid fluid theory (Reynolds number at infinity) whereas the visualization experiment is conducted at Re numbers from 80 to 300. The cylinder spacing ratio Tld is varied between 1.5 and 4.0 in both cases. The topics of the study are biased flow phenomenon at Tld between 1.5 and 2.0, as well as phase interaction between upper and lower vortex streets usually observed at spacing ratios greater than 2.5.
