MSeep simulates two dimensional stationary groundwater flow in a cross section of layered soil structures or in one phreatic aquifer, composed of different material areas. All kinds of boundary conditions can be defined. In MSeep a module has been implemented to determine Piping and Heave.
The soil structure in the vertical x-y plane can be composed of several soil layers divided by layer boundaries. Permeability in x- and y-direction has to be specified for each layer. Sheetpiles can also be defined.
The soil structure in the horizontal x-z plane consists of one vertical layer with different material areas. Permeability in x- and z-direction has to be specified for each area.
On the geometry border the available boundary conditions are:
- closed boundary
- constant discharge boundary
- constant potential boundary
And only for a cross section:
- freatic or seepage boundary (with rain)
- freatic or closed boundary
- overtopping boundary.
Within the geometry constant discharges or fixed potential can be specified in certain points.
A built-in mesh generator creates an element mesh of iso-parametric triangles for the geometry. The element mesh can be refined locally by specifying rectangular refinement boxes.
The finite element method is used to solve the differential equation of Laplace, which represents the stationary groundwater flow. A direct solution technique solves the set of equations. The final position of the freatic surface(s) is found using an iterative process, in which each step the finite element mesh is adapted (cross section) or the transmissivity is recalculated (aquifer).
If no internal nodes were specified with a constant discharge or a fixed potential, an extra calculation can be performed to determine the streamlines.
The results of the calculations are presented in two ways. First of all there is the output file with an echo of the input and the potentials and discharges of all the mesh nodes.
A second option is to view the results graphically in the form of a number of drawings:
- the geometry with the soil layers and sheetpiles
- boundary conditions
- (numbered) element mesh
- distorted element mesh
- potential and/or stream iso-lines.
Demo / images
- Basic Package
- Piping and Heave
- Operating systems:
- Windows 10 (version 20H2)
- Hardware specifications:
- 1 GHz Intel Pentium processor or equivalent
- 512 MB of RAM
- 400 MB free hard disk space
- SVGA video card, 1024 768 pixels, High colors (16 bits)
|Version 18.104.22.168 (2018-01-19)|
Download Release Notes MSeep 22.214.171.124