Hi again similar to my previous post I'm wondering why the solution uses the gauge pressure at point 3 (P3) surely the bolt has to oppose the absolute pressure at point 3 and I don't see how Patm would cancel out.
Thanks for your time.
Sorry for the bad quality of picture...
Hi lads, I'm a Mech eng student and I was wondering if you could help me out with the question in the attached picture:
-First of all I'm wondering why P2=0 because the question gives no indication that P1=150kPa is a gauge pressure
-I can understand why there is no head loss due to exit because...