convective, flow net and local acceleration,circulation

• Convective acceleration is the instantaneous space rate of change of velocity.

•  Local acceleration is the local time rate change of velocity.

 

• A mesh or net work of stream lines and equipotential lines is called a flow net. 

applications and limitation of flow net:->It is used to determine the direction of flow and velocity at any point in the closed system 
>To determine the pressure distribution for given boundaries of flow. 

• Circulation is defined as the flow along a closed curve. Mathematically circulation is obtained if the product of the velocity component at any point and the length of small element containing that point is integrated around the curve.