Orifice Flow Rate

Written by Jerry Ratzlaff on . Posted in Flow Instrument

Orifice flow rate is the amount of fluid that flows in a given time.

Orifice Flow Rate Formula

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

Where:

\(\large{ Q }\) = flow rate

\(\large{ h }\) = center of head

\(\large{ C_d }\) = discharge coefficient

\(\large{ G }\) = gravitational constant

\(\large{ A_o }\) = orifice area

Solve for:

\(\large{ G =  \frac{  \left (  \frac{ Q }{ C_d \; A_o } \right) ^2  }{ 2 \; h  }   }\)

\(\large{ h =  \frac{   \left (  \frac{ Q }{ C_d \; A_o } \right) ^2  }{ 2 \; G  }   }\)

\(\large{ A_0 =  \frac{ Q  }{ C_d \; \sqrt{ 2 \; g \; H }  }   }\)

\(\large{ C_d =  \frac{ Q  }{ A_0 \; \sqrt{ 2 \; g \; H }  }   }\)

 

Tags: Equations for Flow Equations for Orifice