Water Velocity through Piping

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Water Velocity Through Piping formulas

\(\large{ v_w = \frac{ 0.134 \; Q_w }{ 3600 \; \pi \; { \left( \frac {d}{24} \right) ^2  }   }   }\)   
\(\large{ v_w =  0.408 \; \frac{ Q_w }{ d^2 }   }\)  

Where:

 Units English Metric
\(\large{ v_w }\) = water velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\)
\(\large{ \pi }\) = Pi \(\large{3.141 592 653 ...}\)
\(\large{ d }\) = pipe inside diameter \(\large{in}\) \(\large{mm}\)
\(\large{ Q_w }\) = water flow rate \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\)

 

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Tags: Velocity Equations Pipe Sizing Equations Water Equations