When a uniform stream flows past an immersed thick cylinder, a broad low-velocity wake is created downstream, idealized as a V shape in Fig. P3.44. Pressures p1 and p2 are approximately equal. The upstream velocity is U; at section 2 the wake profile varies from U/2 at the centerline to U at z=±L. If the flow is two-dimensional and incompressible, with width b into the paper, derive a formula for the drag force F on the cylinder. Rewrite your result in the form of a dimensionless drag coefficient based on body length CD=F/(ρU2bL).