Orifice Center of Head

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orifice liquid 1

Orifice center of head formula

\( h =  ( Q \;/\; C_d \; A_o )^2  \;/\; 2 \; G   \)     (Orifice Center of Head)

\( Q =  A_o \; C_d \; \sqrt{ 2 \; G \; h }  \) 

\( A_0 =  Q  \;/\; C_d \; \sqrt{ 2 \; G \; h }  \) 

\( C_d =  Q  \;/\; A_o \; \sqrt{ 2 \; G \; h }  \) 

\( G = ( Q \;/\; C_d \; A_o )^2  \;/\; 2  \; h  \) 

Solve for h

orifice flow rate, Q
orifice area, Ao
orifice discharge coefficient, Cd
orifice gravitational constant, G

Solve for Q

orifice area, Ao
orifice discharge coefficient, Cd
orifice gravitational constant, G
orifice center of head, h

Solve for Ao

orifice flow rate, Q
orifice discharge coefficient, Cd
orifice gravitational constant, G
orifice center of head, h

Solve for Cd

orifice flow rate, Q
orifice area, Ao
orifice gravitational constant, G
orifice center of head,h

Solve for G

orifice flow rate, Q
orifice area, Ao
orifice discharge coefficient, Cd
orifice center of head, h

Symbol English Metric
\( h \) = orifice center of head \( in \)   \( mm \)
\( Q \) = orifice flow rate \(ft^3 / sec\) \(m^3 / s\)
\( A_o \) = orifice area \(in^2 \) \( mm^2 \)
\( C_d  \) = orifice discharge coefficient \( dimensionless \)  
\( G \) = orifice gravitational constant \(lbf-ft^2 / lbm^2\)  \(N - m^2 / kg^2\) 

 

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Tags: Orifice and Nozzle