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[GAMBIT] Problems with surface vectors orientation when generating mesh with GAMBIT

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Old   April 27, 2015, 10:57
Default Problems with surface vectors orientation when generating mesh with GAMBIT
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Hi all,

I just started my PhD and I am using a code passed down by an old post-doc from my research group. To launch a simulation, I have to generate the geometry and mesh in gambit before importing it into my solver. The solver uses immersed boundary methods (IBM). The code determines if a region of the domain is fluid or solid based on the "Grid K unit normal" vectors (as referred from tecplot).

The code can only switch the direction of ALL the vectors at once. Therefore, if all the vectors are pointing in the wrong direction, then the code can fix that. However, if one of the vectors is wrong then we have a problem.

When generating the mesh in GAMBIT, I cannot seem to control the default direction at which the Grid K unit vectors are pointed to. I emailed my postdoc, he told me there was a way to do it in the older versions of GAMBIT but he doesn't know how in the new version.

Thanks for the help
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