Consider a subsonic engine inlet (i. e., a diffuser) with an inlet area of 2.30 × 103 in2 and exit-to-inlet area ratio of 1.44. air enters the diffuser flowing at 10.0 lbm/s with a static pressure of 5.00 psia and a velocity of 365 ft/s. the gases exit the diffuser at a static pressure of 5.40 psia and a velocity of 174 mph. assume that the ambient (external) pressure on the walls of the diffuser is 4.90 psia.

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.