Couple-Stress Fluid Flow Due to Rectilinear Oscillations of a Circular Cylinder: Case of Resonance

摘要

The flow due to a circular cylinder oscillating rectilinearly, about its axis of symmetry in a couple-stress fluid is considered. There occurs a rare but an important special case referred to as resonance flow. The material constants satisfy a specific relation called resonance condition. In this case, the flow is analyzed under Stokesian approximation. The velocity component of the flow is derived. The effect of physical parameters like Reynolds number and couple-stress parameter on the drag is analyzed through graphs.