to de- ated in port is veloc- airflow late as ofile is /h)- For the - value 7.29 In Chapter 6 we learned that the velocity profile for fully developed laminar flow between flat plates is given by u = Woll (x/h)2]k. As shown in Figure P7.7. however, when the fluid first enters the region between the plates, the velocity profile is uni- form. Use a mass balance to determine the re- lationship between the initial uniform veloc- ity, W, and the maximum velocity along the centerline of the fully developed flow. Wo. /s and 0.5 m, or out v (x, y, z) = W, 11, (x, y, z) = - T = 8 mm Entrance length Fully developed flow Figure P7.7. h h