Flow past a circular cylinder between parallel walls at low Reynolds numbers

Control of Laminar Fluid Flow and Heat Transfer in a Planar T-Channel with Rotating Obstacle

“…The circular cylinder with diameter D=0.2 is kept at channel junction. The diameter of the cylinder is so chosen as to keep the H/D ratio in the appropriate range so as to ensure the steady nature of the flow in the downstream channel as has been previously described by Singha and Sinhamahapatra [13] for the channel flow. The distance from the centre of the cylinder to the inlet plane of the channel is 6H.…”

“…Boundary-layer development, flow separation, and secondary flows that occur in these complex flows give rise to significant modification of heat and mass transport, as reported by various experimental groups see [8,9]. Heat transfer and fluid flow characteristics over a backward facing [10,11] and forward facing [12] step in a channel with the insertion of rotating obstacles has received some attention in the literature [13,14].…”

Cross Flow past Circular Cylinder with Waviness in Confining Walls near the Cylinder

“…On the other hand, passive technique of vortex shedding control requires no external power. For example, cylinder confined by rigid walls effectively controls the shedding characteristics, Shair et al (1963), Chen et al (1995), Sahin et al (2004), Tiwari et al (2006), Semin et al (2009) and Singha et al (2010) have studied the effect of wall confinement on vortex shedding and reported increased drag on the cylinder. Strykowski and Sreenivasan (1990), Mittal and Raghuvanshi (2001) and Dipankar et al (2006) have introduced a secondary small control cylinder in the wake of the main cylinder and effectively controlled the shedding.…”

“…Thus, wall confinement leads to a stronger streamwise alignment of vortices and results in coherent and sustained vortices in the downstream. Further, the interaction of vortices formed behind the cylinder and those originated near the confining walls leads to inversion of Von Karman vortices, Camarri and Giannetti (2010) and Singha and Sinhamahapatra (2010). Price et al (2002) have experimentally studied the flow visualization around a circular cylinder near the confining rigid plain wall by varying the gap between the cylinder and the plain wall.…”

Effect of Major Axis Length to the Pressure on Ellips

“…Sinhamahapatra conduct research on fluid flow passing through the object of cylindrical single circular with low Reynolds numbers at 45 ≤ R e ≤ 250 and perform experiments on the distance between the dividing wall which is 2 ≤ H/D ≤ 8 [7]. Sarvghad-Moghaddam Hesam and Nooreddin Navid conducted a study on fluid flow around two circular cylinders arranged on side-by-side with the Reynolds number 100 and 200 for a laminar flow, 10 4 to turbulent flow.…”