# Steam Velocity through Piping

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

## Steam Velocity through Piping formula

 $$\large{ v_s = \frac{ Q_s \; \upsilon }{ 3600 \; \pi \; { \left( \frac {d}{24} \right) ^2 } } }$$

### Where:

 Units English Metric $$\large{ v_s }$$ = steam velocity $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$ $$\large{ \pi }$$ = Pi $$\large{3.141 592 653 ...}$$ $$\large{ d }$$ = pipe inside diameter $$\large{ in }$$ $$\large{ mm }$$ $$\large{ \upsilon }$$  (Greek symbol upsilon) = specific volume of steam $$\large{\frac{ft^3}{lbm}}$$ $$\large{\frac{m^3}{kg}}$$ $$\large{ Q_s }$$ = steam flow rate $$\large{\frac{ft^3}{sec}}$$ $$\large{\frac{m^3}{s}}$$