Pressure Spike Water Hammer Review and Equations
spike is the
resulting rapid rise in pressure above static pressure caused
by water hammer. The
highest pressure spike attained will be at the instant the
flow changed and is governed
by the following equation.
Example: Pressure spike
Water at a density of 62.4 lbm/ft3
and a pressure of 120 psi is flowing through a pipe
at 10 ft/sec. The speed of sound
in the water is 4780 ft/sec. A check valve suddenly closed.
What is the maximum pressure of the fluid in psi?