Volume Continuity
This principle is closely related to the conservation of mass, if there are no possible discharge of mass, and the fluid is incompressible, then, the volume occupied by that mass will remain constant.
Volume occupied initially = Volume occupied finally
The volume is written in terms of the density of a fluid and the mass.
ME/ρE =ML/ρL
Where we have:
M: Mass of the fluid that flowing from one place to another.
ρ: Density of the fluid.
For calculation lets consider
value of ME is a, value of ML is b
and ρE is x , ρL is y
VL = ML/ρL