Flux
sections may be placed on internal or external irregular surfaces
and/or extruded walls of the problem.
Contaminant
flow with time may be tracked across flux sections.
Finite
element analysis by the Galerkin method. The solver uses advanced
features such as preconditioning of the convergence matrix as well
as staging and automatic mesh refinement to achieve solutions with
greater stability than any other software currently available.
Solver runs on Red Hat Linux or Windows with support for hyper-threading and multiple processors.
Fully
automatic mesh generation. Mesh generation may be limited by a maximum
number of nodes or by a maximum specified error.
Fully
automatic mesh refinement. Mesh refinement is based on the relative
error of the governing equation and therefore automatically locates
critical zones. In a transient analysis a different mesh is generated
for each time step. Mesh refinement allows reduction in numerical
dispersion and artificial oscellation numerical problems typically
encountered in contaminant transport models. ChemFlux is currently
the only commercial contaminant transport package in the world to offer mesh refinement. Read more about adaptive grid refinement in research published by Mansell, 2002.
Mesh
refinement can be set to follow the contaminant front whereby greatly
increasing solution stability and accuracy.
Fully
automatic time-step refinement for transient analysis. The time-steps
selected by the solver are independant of the plotting intervals
selected by the user.
Model
Design Features
Import
geometry from SVFlux.
CAD
style user interface.
Grid,
snapping, and object snapping features available.
Zooming,
panning features available.
Graphically
assign boundary conditions.
Concentration
or flux boundary conditions may be specified as contants
or free-form equations. Free form equations may be specified
as a function of position or time (i.e. C=0.8+exp(t)*0.3).
Problems
may be entered in Metric or Imperial units.
All
aspects of all models are stored in a database which
may be placed on a server. Multiple users may be "plugged
in" to the same modeling database.
A
central database of soil properties for all entered contaminant
transport problems is maintained. New problems may draw
soils from existing problems.
Problem
geometry may be imported from existing problems.
Existing
problems may be saved under a new name in the database
to allow quick generation of multiple scenarios.
Colors
or patterns of soil regions may be specified.
Lines
(extruded into walls) may be added to model to force
mesh refinement along a linear object.
Internal
boundary conditions may be set or node density specified
along internal wall object.
Sketch
text or lines may be added to the model design.
Graphical
model design may be exported as a WMF or DXF file and/or
printed.
Bitmap
or DXF geometry may be imported and layered behind model
geometry to simplify model creation (version 3.0).
Output
Features without AcuMesh™ Module
Color
2D contour plots of concentrations, water gradients in
the x or y direction, or volumetric water content may
be produced at any X, Y, or Z plane section through the
problem.
Plots
may be zoomed to isolate any region of interest.
2D
Vector plots of water gradients may be produced at any
X, Y, or Z plane section through the problem.
Surface
plots of concentration may be produced at any X, Y, or
Z plane section through the problem.
Volume
or water volume integrals may be computed over the entire
problem or any particular region of interest.
Mesh
plots track mesh refinement.
Plots
of value versus time may be generated at any coordinate
for concentration values.
Overlaying
of plots may be performed. For example, contours may
be shown in Region 1 while the mesh may be shown in Region
2.
Graphical
output may be exported to PNG or BMP formats.
Output Features with AcuMesh™ Module
Color
visualization of 3D mesh is available.
Transparency
allows visualization of internal mesh and/or isosurfaces.
Cutaways
allow user to view internal sections of the model.
Color
3D contour plots of concentration may be placed on any
face of the model. Custom color shadings may be specified.
Isosurfaces
may be plotted.
Overlaying
of plots may be performed. For example, vectors may be
shown in Region 1 while contours of head may be shown
in Region 2.
3D
Vector plots of water gradients.
Text
and line art may be added to output.
Graphical
output may be exported to WMF, DXF, JPG, or BMP formats.
Plotting
of 3D streamtraces.
Animation
of 2D or 3D transient results.
Overlay
of DXF files.
Applications
Single-phase
miscible contaminant movement.
Movement
of contaminants out of tailings pits and earth containment
facilities.
Solution
of advection-dominated problems typically plagued by
convergence problems.
Modeling
of problems dominated by radioactive or biological decay.
Model
contaminant movement through any combination of advection,
dispersion, adsorption and/or decay.
Documentation
The following
manuals document the operation of the ChemFlux software. The design
of the software makes it simple to learn and use. Most users are able
to learn how to use the software effectively to create 3D problems
within 30-60 minutes.
User's
manual - documents specific operation of software.
Tutorial
manual - Step-by-step instructions guide the user through
creation of 2D and 3D problems.
Theory
manual - documents the theory of the governing partial
differential equations used in the solution of the seepage
problem.
Verification
manual - benchmarks the ChemFlux software against typical
seepage problems published in texts, journal papers,
or manuals from other software packages.
System
Requirements
ChemFlux3D
runs on Windows 95/98, NT 4.0, Me, 2000, and XP. The recommended
minimum hardware configuration is a P266 with 128MB RAM and 35 MB hard
disk space.
chemflux.com
QUICK
LINKS
