The Windows version of MicroFEM takes you through the whole process of ground-water
modeling, from the generation of a finite-element grid through the stages
of preprocessing, calculation, postprocessing, graphical interpretation and
plotting. Confined, semi-confined, phreatic, stratified and leaky
multi-aquifer systems can be simulated with a maximum of 20 aquifers.
Irregular grids, as typically used by finite-element programs, have several
advantages compared to the more or less regular grids used by
finite-difference codes. A model with a well-designed irregular grid will
show more accurate results with fewer nodes, so less computer memory is
required while calculations are faster. MicroFEM offers extensive
possibilities as to the ease of creating such irregular grids. Two grid
generators are included; one is designed for irregular geometries as often
encountered in regional studies, while the other is useful for engineering
applications that often require high contrasts in node spacing, e.g. sheet
piling and excavations. Adding and erasing nodes, connection swapping and
further modifications to the grid can be done interactively.
Other MicroFEM features include the ease of data preparation and the
presentation and analysis of modeling results. A flexible way of
zone-selection and formula-assignment is used for all parameters:
transmissivities, aquitard resistances, well discharges and boundary conditions
for each layer.
Depending on the type of model this can be extended with
layer thicknesses, storativities, spatially varying anisotropy, topsystem and user-defined parameters.
To inspect and interpret model results, maps and profiles can be used to
visualize contours, heads, 3D-flowlines, flow vectors, etc. Time-drawdown
curves and water balances can be selected with just a few keystrokes or
MicroFEM has a built-in 3D-model viewer as well as a built-in optimization tool to calibrate steady state models based
on the Levenberg-Marquardt algorithm. Up to 40 parameters (hydraulic properties and boundary
conditions) can be estimated on the basis of up to 2000 observations.
Download and try the free MicroFEM-LT version. Details can be found
in the Users guide (25 pages), the MicroFEM course for starters (57 pages) and the MicroFEM tutorial (57 pages)
that can all be downloaded from this web site as pdf-files.
Excellent customer e-mail support is an essential part of a MicroFEM license,
and an integral part of its development. Many of the MicroFEM enhancements
are the result of customer suggestions.
MicroFEM is updated several times per year.
Recent modifications are described in the update.txt file. Free updates of
any full version of MicroFEM can be downloaded anytime by means of the Customer login system.