Vortex-induced oscillations at low Reynolds numbers: Hysteresis and vortex-shedding modes

2005 ◽  
Vol 20 (8) ◽  
pp. 1085-1104 ◽  
Author(s):  
S.P. Singh ◽  
S. Mittal
Keyword(s):  
Vortex Shedding ◽  
Reynolds Numbers ◽  
Low Reynolds Numbers ◽  
Low Reynolds ◽  
Vortex Shedding Modes

Suppression of vortex shedding behind a circular cylinder by another control cylinder at low Reynolds numbers

2007 ◽  
Vol 573 ◽  
pp. 171-190 ◽  
Author(s):  
A. DIPANKAR ◽  
T. K. SENGUPTA ◽  
S. B. TALLA
Keyword(s):  
Vortex Shedding ◽  
Physical Mechanism ◽  
Grid Method ◽  
Reynolds Numbers ◽  
Accurate Solution ◽  
Navier Stokes ◽  
Navier Stokes Equation ◽  
Low Reynolds Numbers ◽  
Low Reynolds ◽  
Control Cylinder

Vortex shedding behind a cylinder can be controlled by placing another small cylinder behind it, at low Reynolds numbers. This has been demonstrated experimentally by Strykowski & Sreenivasan (J. Fluid Mech. vol. 218, 1990, p. 74). These authors also provided preliminary numerical results, modelling the control cylinder by the innovative application of boundary conditions on some selective nodes. There are no other computational and theoretical studies that have explored the physical mechanism. In the present work, using an over-set grid method, we report and verify numerically the experimental results for flow past a pair of cylinders. Apart from providing an accurate solution of the Navier–Stokes equation, we also employ an energy-based receptivity analysis method to discuss some aspects of the physical mechanism behind vortex shedding and its control. These results are compared with the flow picture developed using a dynamical system approach based on the proper orthogonal decomposition (POD) technique.

Control of vortex shedding by thermal effect at low Reynolds numbers

2000 ◽  
Vol 21 (4) ◽  
pp. 227-237 ◽  
Author(s):  
J.-C. Lecordier ◽  
L.W.B. Browne ◽  
S. Le Masson ◽  
F. Dumouchel ◽  
P. Paranthoën
Keyword(s):  
Thermal Effect ◽  
Vortex Shedding ◽  
Reynolds Numbers ◽  
Low Reynolds Numbers ◽  
Low Reynolds
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