A flow net is a graphical representation of streamlines and equipotential lines such that these lines

Explanation:

Flow net

• Flow net is grid obtained by drawing a series of streamline ψ  and equipotential lines ∅.
• Flow net provides a simple graphical technique for studying 2D irrotational flows when the mathematical calculation is difficult and cumbersome.
• The streamline ψ  and equipotential lines ∅ are mutually perpendicular to each other.
• The streamlines are so spaced so that rate of flow Q is the same between each successive pair of lines.
• The streamlines in the flow net show the direction of flow and equipotential lines join the points at the equal velocity potential ∅.
• For example, the Flow-through Francis water turbine rotor is analyzed by flow net.