2. A fluid at 14.7 psi (lb-f per square inch) with kinematic viscosity () 1.8 x10-4 ft2/sec and density() 0.076 lb/ft3 enters a 10 inch diameter pipe with a uniform velocity and a Reynolds number 1000. Determine the decrease in pressure going from the entrance to 100 inch downstream the entrance. The entrance length, LLee is given by, LLee = 0.0288DD. DD. (Hint: calculate the pressure drop separately between 1 and 2 and between 2 and 3 because the region 1-2 shows developing flow and region 2-3 shows developed flow) region. The flow becomes fully developed after the entrance length, LLee. The thickness of the boundary layer 1 −� given as (xx) = 5.0xx 2. Show that entrance length for this flow can be expressed LL = 0.01DD. . xxeeDD