Mass flow rate
The conservation of mass is a fundamental concept of physics. Within some problem domain, the amount of mass remains constant --mass is neither created nor destroyed. The mass of any object is simply the volume that the object occupies times the density of the object.
Mass flow depends on the density, velocity of the fluid and the area of the cross section. Meaning, it is the movement of mass per unit time. It's units are kg/s. The formula for mass flow rate is given:
Mass Flow Rate = (density)*(velocity)*(area of the cross section)
m = ρ v A
Where we have:
ρ: Density of the fluid
v: Velocity of the fluid
A: Area or cross section
