Water Hammer Upstream Pipe Length

on . Posted in Fluid Dynamics

  

Water Hammer Upstream Pipe Length Formula

\(\large{ l =   \frac { \left( \; p_{inc} \;-\; p_i  \; \right)\; t }   { 0.070 \;v  }  }\)
Symbol English Metric
\(\large{ l }\) = upstream pipe length \(\large{ft}\) \(\large{m}\)
\(\large{ v }\) = flow velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\)
\(\large{ p_i }\) = inlet pressure \(\large{\frac{lbf}{in^2}}\) \(\large{Pa}\)
\(\large{ p_{inc} }\) = pressure increase \(\large{\frac{lbf}{in^2}}\) \(\large{Pa}\)
\(\large{ t }\) = valve closing time \(\large{sec}\) \(\large{s}\)

 

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Tags: Water Hammer Equations