If the discharge Q (also called volumetric flow rate, or flow) is defined as
Q=AV
the continuity equation may take the from
m=p1Q1=p2Q2
For incompressible steady flow
Q=====
is a useful trom of the equation
For constant-density flow,steady or unsteady, Eq (3.3.1)becomes
456456456456
which states that the net volume efflux is zero (this implies that the control volume is filled with liquid at all times)