Conservation of Mass

Calculate the change in mass storage in a system based on the Law of Mass Conservation. The mass flow in and out of a control volume must balance according to: dM = ρi vi Ai dt - ρo vo Ao dt

Parameter	Inflow	Outflow
Density (kg/m³)	1000	1000
Velocity (m/s)	2	2.5
Diameter (mm)	50	30
Area (m²)	0.001963	0.000707
Time (s)	1200	1200
Mass Flow (kg)	4712.4	2120.4
Change in Mass (kg)		2592

Calculator

Inputs

Inflow Density (kg/m³)

Inflow Velocity (m/s)

Inflow Diameter (mm)

Outflow Density (kg/m³)

Outflow Velocity (m/s)

Outflow Diameter (mm)

Time Duration (minutes)

Results

Inflow Area-- m²

Outflow Area-- m²

Time Duration-- s

Inflow Mass Flow-- kg

Outflow Mass Flow-- kg

Change in Mass Storage (dM)-- kg