Flow past two finite-length wall-mounted cylinders in tandem arrangement at Re = 200

To investigate the characteristics of flow over two finite-length cylinders in tandem arrangement, numerical simulations were performed using CFD technique for spacing ratios (S = D/d, where d is diameter and D separation gap between cylinders) 0.5 12 at a Reynolds number 200. The height-to-diameter ratio (h/d, h height was fixed 8. This study primarily focuses on effects S free ends vortical structure behind cylinders. has significant effect Strouhal lift drag coefficients results show extremely different vortex streets cylinder heights. With an increase S, average coefficient downstream increases, whereas that upstream first decreases then increases. Additionally, as changes 4.5 5, suddenly. ex-hibit complex behavior.