negative jacobians for all prism cells
I wrote a conversion tool to export paraview's vtu format to gmsh so that I could import to .xml format.
It seems to be working quite well, except that all of the prisms have negative jacobians. Linearising them has no effect.
The commands I used as follows:
NekMesh DSI020CALb_vmtk_decimate_trim_ext2_mesh.msh DSI020CALb_nektar.xml NekMesh -m jac:extract DSI020CALb_nektar.xml DSI020CALb_nektar_jac_export.xml FieldConvert DSI020CALb_nektar_jac_export.xml DSI020CALb_nektar_jac_export.vtu NekMesh -m linearise:invalid DSI020CALb_nektar.xml DSI020CALb_nektar_lin.xml
There are 3180 prism elements and they all give negative jacobians, and this doesn't change with linearization.