Equation of continuity Physics

Jul 25, 2022, 16:45 IST

EQUATION OF CONTINUITY

We have seen that the fluid going through a tube of flow does not intermix with fluid in other tubes. The total mass of fluid going into the tube through any cross-section should, therefore be equal to the total mass coming out of the same tube from any other cross-section in the same time. This leads to the equation of continuity.

Let us consider two cross-sections of a tube of flow at the points A and B as shown in figure. Let the area of cross section at A be A₁ and that at B be A₂.

Equation of continuity with example