A newtonian fluid is flowing at steady state in between the annular space of two pipes as shown in the figure. The radius of the inner pipe is R1 and the radius of the outer pipe is R2. Derive the velocity distribution for laminar, incompresiible flow between the pipes. A newtonian fluid is flowing at steady state in between the annular space of two pipes as shown in the figure. The radius of the inner pipe is R1 and the radius of the outer pipe is R2. Derive the velocity distribution for laminar, incompresiible flow between the pipes