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Control of vortex shedding behind circular cylinder for flows at low Reynolds numbers. (English) Zbl 1013.76049

From the summary: It has been observed by researchers in the past that vortex shedding behind circular cylinders can be altered, and in some cases suppressed, over a limited range of Reynolds numbers by proper placement of a second, much smaller, ‘control’ cylinder in the near wake of the main cylinder. Here results are presented for numerical computations of some such situations. A stabilized finite element method is employed to solve incompressible Navier-Stokes equations in the primitive variables. At low Reynolds numbers, for certain relative positions of the main and control cylinder, the vortex shedding from the main cylinder is completely suppressed. A good agreement is observed between the present computations and experimental findings of other researches.

MSC:

76M10 Finite element methods applied to problems in fluid mechanics
76D55 Flow control and optimization for incompressible viscous fluids
76D05 Navier-Stokes equations for incompressible viscous fluids
76D17 Viscous vortex flows
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