Mass Flow Rate

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Mass flow rate is the average velocity of a mass that passes by a point.  It is often abbreviated as the letter m with a dot over it, ṁ. 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

\(\large{ \dot m_f = \rho v A   }\)         


\(\large{ \dot m_f }\) = mass flow rate

\(\large{ A }\) = area of cross section

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

\(\large{ v }\) = fluid velocity

Mass Flow Rate Diagram

Tags: Equations for Flow Equations for Mass