Water Flow Rate Through an Orifice

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Water Flow Rate Through an Orifice formula

\( Q_w \;=\; 0.0865 \; C_d \; ( d_o\;/\;4.654 )^2  \; \sqrt{  p_1 - p_2 \;/\; SG  } \) 
Symbol English Metric
\( Q_w \) = water flow rate \(ft^3\;/\;se\) \(m^3\;/\;s\)
\( C_d \) = orifice discharge coefficient \(dimensionless\) \(dimensionless\)
\( d_o \) = diameter of orifice \( in \) \( mm \)
\( p_1 \) = primary pressure \(lbf\;/\;in^2\) \(Pa\)
\( p_2 \) = secondary pressure \(lbf\;/\;in^2\) \(Pa\)
\( SG \) = specific gravity of water \(dimensionless\) \(dimensionless\)

 

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Tags: Flow Water Orifice and Nozzle