University:
North Idaho College
Course:
PHYS-211 | Engineering Physics I
Academic year:

2023
Views:

134

Pages:

3
Author:

Hani T.

Conservation of Mass. The Continuity equation applies the principle of Conservation of Mass to fluid flow. Consider a fluid flowing through a fixed volume Tank having one inlet and one outlet as shown below. If the flow is Steady, No accumulation of fluid within the Tank, then the rate of fluid flow at entry must be equal to the rate of fluid flow at exit so- Mass Conservation, If at entry or exit have a cross sectional Area A (m²), fluid parcel travels a distance of dl in time dt then the volume flow rate V(m³/sec) is given by V = A.dl/dt But Since dl/dt is fluid velocity V(m/s) we can write Q = V x A The mass flow rate m(kg/s) is given. By The product of Density and Volume flow rate m = P. Q = P. V. A Between two points in flowing fluid for Mass Conservation we can write P1.V1.A1 = P2.V2.A2 If the fluid is incompressible P1 = P2 then V1.A1 = V2.A2