From the Navier-Stokes equations for incompressible flow in polar coordinates (App. E for cylindrical coordinates), find the

Question:

From the Navier-Stokes equations for incompressible flow in polar coordinates (App. E for cylindrical coordinates), find the most general case of purely circulating motion υθ (r), vr = υz = 0, for flow with no slip between two fixed concentric cylinders, as in Fig. P4.35