Water Hammer Maximum Surge Pressure for Water

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Water Hammer Maximum Surge Pressure for Water Formula

\(\large{  p_{spw}  =  \frac { \alpha\;  \Delta v_w   }   { 2.31\;g  }  }\)   

Where:

 Units English Metric
\(\large{ p_{spw} }\) = maximum surge pressure for water \(\large{\frac{lbf}{in^2}}\) \(\large{Pa}\)
\(\large{ g }\) = gravitational acceleration \(\large{\frac{ft}{sec^2}}\) \(\large{\frac{m}{s^2}}\)
\(\large{ \alpha }\)  (Greek symbol alpha) = pressure wave velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\)
\(\large{ \Delta v_w }\) = water velocity change \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\)

Solve for:

\(\large{  g  =  \frac { \alpha \; \Delta v_w   }   { 2.31\; p_{spw}  }  }\)   
\(\large{  \alpha  =  \frac { 2.31 \; p_{spw} \;g  }   { \Delta v_w  }   }\)   
\(\large{  \Delta v_w  =  \frac { 2.31 \; p_{spw} \;g  }   { \alpha  }   }\)   

 

P D Logo 1

Tags: Pressure Equations Water Hammer Equations