THEORY OF FLOW OF FLUIDS

Streamline (or steady) flow of fluids:

The flow of a fluid is said to be streamlined or steady, if at any given point, the velocity of each flowing fluid particle (both in magnitude and direction) remains constant in time.

STREAMLINE: The path of a fluid particle under steady flow is called a streamline.

It is defined as the curve whose tangent at any point gives the direction of fluid velocity at that point.

EQUATION OF CONTINUITY is basically a statement of conservation of mass of a fluid in steady flow.

Torricelli’s law:

Velocity of efflux ie. the velocity with which a liquid flows out of an orifice is equal to that which a freely falling body would acquire in falling through a vertical distance equal to the depth of the orifice below the free surface of the liquid.

FOR MORE DETAILS, WHICH NEEDS EQUATION, PLEASE VIEW THE FOLLOWING DOCUMENT

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