You can run this script, e.g. compute_volume.geo : Merge "3dblock.msh"; Plugin(NewView).Run; Plugin(ModifyComponents).Expression0 = "1"; Plugin(ModifyComponents).Run; Plugin(Integrate).Dimension = 3; Plugin(Integrate).Run;
You'll get Info : Running '/Applications/Gmsh.app/Contents/MacOS/gmsh vol.geo -' [Gmsh 3.0.7, 1 node, max. 1 thread] Info : Started on Tue May 1 09:00:57 2018 Info : Reading 'vol.geo'... Info : Reading '3dblock.msh'... Info : 6790 vertices Info : 32825 elements Info : Done reading '3dblock.msh' Info : Running Plugin(NewView)... Info : Done running Plugin(NewView) Info : Running Plugin(ModifyComponents)... Info : Done running Plugin(ModifyComponents) Info : Running Plugin(Integrate)... Info : Step 0: integral = 1.000000000000803e-15 Info : Done running Plugin(Integrate) Info : Done reading 'vol.geo' Info : Stopped on Tue May 1 09:00:57 2018 > On 30 Apr 2018, at 22:58, Juan E. Sanchez <juan.e.sanc...@gmail.com> wrote: > > Hello, > > Is there a way to get the mesh volume calculated by gmsh? > > My simulator is calculating a volume of 1.09e-15 for the attached structure, > but it should be 1e-15. > > Before I added these flags > Mesh.OptimizeNetgen=1; > Mesh.OptimizeThreshold=1; > > I was getting 1.17e-15. > > I am summing the volume for each tetrahedron sub volume from the edge center, > to the element center, to the centers of each triangle face of the edge. > > If my calculation is correct, are there flags I can use to improve the > situation? > > I am running version 3.06. > > gmsh -3 3dblock.geo > > > Regards, > > Juan > <3dblock.geo>_______________________________________________ > gmsh mailing list > gmsh@onelab.info > http://onelab.info/mailman/listinfo/gmsh
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