Analytic and numerical solutions of variable boundary seepage model of the unstable well flow in underground water flow;

A universal solution to unstable groundwater movement in vicinity of canals;

In view of the adaptability of finite analytic method for irregular unit,a five-point element scheme of finite analytic method was established in the present study to solve unsteady groundwater flow equation.

A local coordinate finite analytic method has been described for thenumerical solution of unsteady groundwater flow in this paper.

Transfer function approach of solute transport in unsaturated homogeneous soil under unsteady flow condition;

Numerical method for unsteady flow in lock manifold;

Moreover, there are some unsteady factors occur in practical tub flowing, In article, the change of phase state and unsteady flow factor in flow process are considered, the mathematical model is established.