016 Q12. =) Pgsin eh The velocity profile for laminar flow in an annulus is given by QA = Sucr). 25rdr 3M u(r)=- ΔΡ. Re 4μL In (R/R) In R-RR μ where Ap/L -10 kPa/m is the pressure gradient, is the viscosity (SAE 10 oil at 20°C), and R. -5 mm and R-1 mm are the outer and inner radii. Find the volume flow rate, the average velocity, and the maximum velocity. Plot the velocity distribution. Ri R u(r)