Fluid Dynamics
Table of Contents
1. Pressure at outlet of a nozzle
Fluid-Mechanics-Fundamentals-and-Applications.nil Book pg 282
A common simplification in the application of Newton’s laws of motion is to subtract the atmospheric pressure and work with gage pressures. This is because atmospheric pressure acts in all directions, and its effect cancels out in every direction (Fig. 6–9). This means we can also ignore the pressure forces at outlet sections where the fluid is discharged at subsonic velocities to the atmosphere since the discharge pressures in such cases are very near atmospheric pressure.
