# Flow Rate

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

## Formulas that use Flow Rate

\(\large{ Q = A \; v }\) | |

\(\large{ Q = C_v \; \sqrt {\frac{SG} {\Delta p} } }\) | (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