I need a well developed pre- and post-processor that can generate complex meshes and provide all the functionalities needed to solve flow problems in it. And also allow visualizations.
The goal is to link it to my c++ solver. My self-written 1D and 2D grid managers can no longer suit the complexity of my problems at hand. And writing the type I need will cause a serious delay. So I need a manager that can allow me focus on the solver leaving the meshing and visualizations for the tool.
In particular, I need it to be able to generate multiple meshes at once and be able to identify the common areas.
Hi
Other grid generators may be gmsh (free) and also gridpro (free for academic use), as Allard already mentioned vtk + paraview is parobabily a very good choise,
Sina
For generating meshes, you can look at octree. That is freely available online. For output for visualization it can be translated into unstructured vtk format.
Hi
Other grid generators may be gmsh (free) and also gridpro (free for academic use), as Allard already mentioned vtk + paraview is parobabily a very good choise,
Sina
As an alternative to paraview you can also use VisIt for the visualization.
For post-processing the best tool is AVS (Advanced Visualisation Studio), micro version which give potential of that tool is MicroAVS you can download for 30day s for free. There is also free version with similar possibility call OpenDX. You can make any most sophisticated post-processing there.
The same group which develops gmsh ( http://geuz.org/gmsh) also develops a finite element solver named GetDP (http://geuz.org/getdp), and both can be linked together. gmsh could be your pre- and post-processor, and you could implement your own solver using getdp.
http://geuz.org/getdp/
Thanks all.
I think I'm beginning to like gmsh. But how do things work?
Dear Marcio, how do things really work in gmsh? What I want is this.
I already have a c++ platform which I have developed(from scratch) for my simulation. So what I want is to generate mesh with gmsh(or any other tool) and input to my platform where I can now implement my own solver in my c++ code. How possible is this?
I do not want to implement solver in gmsh but only need the mesh facilities. So the question now is how possible is it to import a mesh from gmsh to a c++ code.
Dear Chinedu,
Mesh generation can be done using the graphical interface or via scripts. As for importing the mesh, gmsh has tens of output formats available, both in ASCII and binary formats. You could choose the one that best fits to your needs and write a simple reader for it.
MATLAB through CMEX facility may help you. This connection allows you to use more indepth capability of the MATLAB environment.
Thanks Ranjbar. If matlab can generate a grid that can be imported to a C++ code, then that will be the best solution, but if CMAX requires that one must code the solver in matlab, then it is out of place for me. So which one is it, Ranjbar?
None. CMEX facility is an option to convert C++ code into MATLAB one. Thereafter you may use your C++ code as it is as a MATLAB code. C++ data generated can be plotted in there.
Ranjbar, Ok.
I actually like to post process with matlab but not for simulation proper.
Thanks a lot.
Actually, Matlab's MEX interface does not convert any code into Matlab code. Instead, it allows you to call functions you have written in a different language, e.g. C or Fortran. Thus, calling your solver from Matlab does not have an impact on performance.
Most academic solvers do not include pre- and postprocessing into the solver code. If you want open source software others already mentioned gmesh, ParaView and VisIt. I think that both ParaView and VisIt also provide libraries to include the visualization directly into your own code. In order to import meshes and export results you should choose one format and look for a library which allows you to read from/write to that format. You can certainly pick different formats for input and output.
For post processing you can use Paraviews (available on Mac Os Windows and Linux systems). It s an open source program. The data exploration can be done interactively in 3D or programmatically . It upport distributed computation models to process large data sets.
http://www.paraview.org/
- Badges
- Science topic