Orifice Flow Conditions/Exit Pipe End Flow Conditions/Manifold Pipe End Flow Conditions - CAESAR II - Help

CAESAR II Users Guide

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CAESAR II
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CAESAR II Version
12

The calculated fluid properties at the three critical cross-sections in the relief piping. If pressures or velocities here do not seem reasonable, then some characteristic of the relief model is in error.

If the L dimensions are significant (by several feet), then unbalanced thrust loads acting between the elbow-elbow pairs are very similar to a water hammer load. Water hammer pulses travel at the speed of sound in the fluid, while the fluid/atmosphere interface pulses travel at the velocity of the flowing fluid. These unbalanced loads can cause significant piping displacements in much shorter pipe runs. The magnitude of these loads is equivalent to the calculated thrust and the duration may be found from the calculated fluid velocity and distance between each elbow-elbow pair.