Flow Rate

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

flow rate 1Flow rate, abbreviated as Q, measure the amount of fluid that flows in a given time past a specific point.

 

Flow Rate formulas

\(\large{ Q =  A \; v  }\)   
\(\large{ Q = C_v \; \sqrt {\frac{SG} {\Delta p} }  }\) (flow coefficient)
\(\large{ Q =  k \; i  \; A_c }\)  (hydraulic gradient)
\(\large{ Q = \frac{ 3960 \; WHP }{ h_t }   }\) (water horsepower)

Where:

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

\(\large{ A }\) = area

\(\large{ A_c }\) = area cross-section of flow

\(\large{ C_v }\) = flow coefficient

\(\large{ k }\) = hydraulic conductivity

\(\large{ i }\) = hydraulic gradient

\(\large{ \Delta p }\) = pressure differential

\(\large{ SG }\) = specific gravity of fluid (water at 60°F = 1.0000)

\(\large{ h_t }\) = total head or height

\(\large{ v }\) = velocity

\(\large{ WHP }\) = water horsepower

 

Tags: Equations for Flow