Control of Wake and Vortex Shedding Behind Solid Circular Obstacle by Magnetohydrodynamics

Yıl 2015, Cilt: 1 Sayı: 7, - , 06.06.2016

Javad A. Esfahani

Öz

Control of vortex shedding leads to a reduction in the
unsteady forces acting on the bluff bodies and can significantly
reduce their vibrations. In this paper, the finite volume method
(FVM) is used to simulate the flow around and through twodimensional
circular obstacle. An external magnetic field is
applied to control the wake behind the obstacle and also to
suppress the vortex shedding phenomena. Maxwell equations are
applied to provide the coupling between the flow field and the
magnetic field. The range of Stuart (N) and Reynolds (Re)
numbers are 0-10 and 1-200, respectively. The effects of
magnetic field on control of wake structure behind the obstacle
are investigated in details. It is found that for higher Stuart
number (i.e. N=5), drag coefficient increases rapidly by using
magnetic field.

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