Flownet
（重定向自Flow net）
A flownet is a graphical representation of two-dimensional steady-state groundwater flow through aquifers.
Construction of a flownet is often used for solving groundwater flow problems where the geometry makes analytical solutions impractical.. The method is often used in civil engineering, hydrogeology or soil mechanics as a first check for problems of flow under hydraulic structures like dams or sheet pile walls. As such, a grid obtained by drawing a series of equipotential lines is called a flownet. The flownet is an important tool in analysing two-dimensional irrotational flow problems.