Andrew is currently finishing up a new modeler, surface mesh generator, 3D
mesh generator, flow solver, flow visualization tool, and other miscelaneous
tools at this time.
Introduction
DimensionMG is a general purpose three dimensional automatic
mesh generator. It is based on the Delaunay method and incorporates
face-swapping techniques.
Features of DimensionMG Version 1.0
- Fast Algorithm! DimensionMG can generate meshes
anywhere from a few seconds (<100K elements) to a few minutes (2-5 million
elements) on a simple PC workstation.
- Able to Generate Large Grids! Assuming there is sufficient
memory on the host computer, DimensionMG can generate meshes
containg millions of elements (has been tested to up to 5 million
elements).
- Flexable Input File Format! The input to DimensionMG is
a surface grid consisting of triangular elements. This grid can be
created by the user, or generated with DimensionSG (the automatic
surface grid generator) which will automatically discretize a geometric model.
- Explicit Boundary Definition! The resulting surface of the
final 3D mesh matches the inputed surface grid exactly.
- Easy Refinement Control! DimensionMG has been designed
for easy control of the grid refinement.
The grid refinement is a function of the
refinement on the boundary (which is easy to control with DimensionSG)
and further control is possible with the creation of interior refinement
surfaces.
- Advanced Mesh Optimiztion! Bla bla bla ...
- Architecture Independent! DimensionMG should run on
any computer with a cc compilor.
- ... ... ...
Examples
- Round Parachute
- Cross Parachute
- Cargo Aircraft
- Automobile
- Hellicoptor
On-Line Tutorial
A description of the use of DimensionMG, program options,
as well as a tutorial of its use.
Availability of DimensionMG Version 2.1
WARNING: Version 2.1 is an beta version.
As of now, the distribution of DimensionMG is limited to AHPCRC and
other Army researchers. A general distribution pollicy will be made
availiable with the final version of DimensionMG.
- SGI IRIX 6.xx
- SGI IRIX 5.xx
- Linux
- PC
- Others
Other (Complementary) Dimension Mesh Management Packages
DimensionSG
The automatic surface grid generator. Automatically generates a
triangular element surface grid based on a given geometric model.
DimensionRG
The automatic mesh re-generator. Given an initial (non-optimal) grid,
DimensionRG will rearrange elements, and add/remove nodes to
satisfy element quality and grid refinement properties. This package
is mainly used in remeshing operations (mesh movement or adaptive
computations).
Planned Features of DimensionMG Version 2.0
- Hybrid Grids! Creation of zones of thin, semi-structured
layers of elements around boundaries. These are used to model boundary
layer flows more accurately.
- Speed Improvements!
- Reduced Memory Option! An optinal mode of running
DimensionMG which uses less memory at the cost of more computation.
This can be used where a very large grid is desired, or DimensionMG
is run on a low-memory computer.
- More Powerfull Grid Quality Mechanisms!
Copywrite 1998, Andrew A. Johnson, NetworkCS/AHPCRC
Last updated 8-5-98