, Volume 38, Issue 3, pp 325-334

First online:

Unsteady Flow Due to Concentric Rotation of Eccentric Rotating Disks

  • H. Volkan ErsoyAffiliated withDepartment of Mechanics, Faculty of Mechanical Engineering, Istanbul Technical University, Gümüşsuyu

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While two parallel disks are initially rotating with the same angular velocity about non-coincident axes, the axes are suddenly made coincident. The development of the flow is examined until the fluid rotates as a rigid body in the steady-state. The velocity field and the shear stress components on the disks are found exactly by a Fourier series solution. Furthermore, a series solution that converges rapidly at small times is obtained with the aid of the Laplace transform technique.

Eccentric and concentric rotating disks Unsteady flow Newtonian fluid Fluid mechanics