Assume the pipe in Problem 8.15 is smooth walled. (a) Compute the velocity at the centerline of the pipe. (b) Compute the thickness of the boundary layer using the Morris and Biggert criterion. (c)...

Assume the pipe in Problem 8.15 is smooth walled. (a) Compute the velocity at the centerline of the pipe. (b) Compute the thickness of the boundary layer using the Morris and Biggert criterion. (c) Compute the Darcy friction factor from the smooth pipe formula. (d) Is our assumption of a smooth-walled pipe justified?