GGU-CONSOLIDATE: Numerical solution with vertical drainage

In contrast to the analytical solution with vertical drainage, the numerical solution also allows multi-layer systems, arbitrary pore water pressure distribution and load increase. Analytical methods with horizontal subdivisions, the spacing of which can be defined using the menu item "Edit/System parameters", are used for modelling the numerical solution in accordance with the previous sections. The consolidation degree U is then determined using numerical integration for the given times.