Engine oil at 100°c and a velocity of 0.1 m/s flows over both surfaces of a 0.8-m-long flat plate maintained at 20°c. determine: (a)-the velocity and thermal boundary layer thicknesses at the trailing edge (b)-the local heat flux and surface shear stress at the trailing edge. (c)-the total drag force and heat transfer per unit width of the plate.

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.