Explain with sketch flow net
Flow Net: The grid, mesh or net formed by intersection of equipotential line and flow lines is called as flow net. In a flow net, flow lines and equipotential lines intersect each other at right angles. The quantity of water flowing through each flow channel is the same. The drop of head, or the potential drop between any two successive equipotential lines is the same. The fields are approximately squares. The flow net is representative of the flow pattern and dissipation of the hydraulic head.