The circumferential velocities in a free vertex and forcedvortex, respectively, are u = C/r and u = wr, where the radius inmeters, velocity is in m/s, and C is 8 m^2/s, and w = 2 rad/s. Forboth cases, calculate the circulation around a circular path with aradius of 1m and a center at (0,0). Are these inviscid flows? Notethat ur = 0.
