Water Hammer Pressure Increase

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Water Hammer Pressure Increase Formula

\(\large{ p_{inc} =   \frac { 0.070 v l  }   { t  } + p_i  }\)                 

Where:

\(\large{ p_{inc} }\) = pressure increase

\(\large{ v }\) = flow velocity

\(\large{ p_i }\) = inlet pressure

\(\large{ l }\) = upstream pipe length

\(\large{ t }\) = valve closing time

Solve for:

\(\large{ v =   \frac { \left( \; p_{inc} \;-\; p_i  \; \right) t }   { 0.070 l  }  }\)

\(\large{ p_i  =  p_{inc}  \;-\; \frac { 0.070 v l  }   { t  }   }\)

\(\large{ l =   \frac { \left( \; p_{inc} \;-\; p_i  \; \right) t }   { 0.070 v  }  }\)

\(\large{ t =   \frac { 0.070 v l  }   {  p_{inc} \;-\; p_i  }   }\)

 

Tags: Equations for Pressure Equations for Water Hammer