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Recently I've been running a simulation of a Ranque Hilsch Vortex Tube in OpenFOAM. This went well for a time but when I tried refining and implementing a new mesh, it all came crashing down, showing negative total temperatures with gradients of more than 600 K for neighbouring cells. Since my experience with OpenFOAM is still rather limited, I tried with refining every surface up to a ridiculously high degree. After that mishap I went into it with my head on straight and started looking at what...

So I have started to study Salome for the drawing and meshing geometries for the OpenFOAM applications.

It is very easy tool to create geometries, in my case first try was continuous casting mold with a submerged entry nozzle.

Meshing order

1. Mesh the edges, especially feature edges
2. Mesh faces with the transition from smaller elements near the features to bigger ones away from them (where it is actually needed)
3. Mesh the rest of the volume mesh

1- open a new terminal type [ tar xzf SALOME-7.7.1-OPENSOURCE-UB14.tgz ]
2- follow by [ ./Salome-V7_7_1-LGPL-x86_64.run ]
you will see this error
bash: ./Salome-V7_7_1-LGPL-x86_64.run: Permission denied
3- then type [ chmod +x ./Salome-V7_7_1-LGPL-x86_64.run ]
type this again [ ./Salome-V7_7_1-LGPL-x86_64.run ]
Then you are good to go.
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Self Extracting Salome V7_7.1 Installer