# Mass Flow Rate

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Mass flow rate, abbreviated as $$\dot m_f$$, is the average velocity of a mass that passes by a point.  In engineering, mass flow rate is often used, along with the conservation of mass to determine how much product moves through a pipe or duct.  The calculation and formula for determining the mass flow rate where the flow area and density are known.

## Mass flow rate Formula

 $$\large{ \dot m_f = \rho \; v \; A_c }$$

### Where:

$$\large{ \dot m_f }$$ = mass flow rate

$$\large{ A_c }$$ = area cross-section

$$\large{ \rho }$$  (Greek symbol rho) = density of fluid

$$\large{ v }$$ = velocity of fluid