Sir,

I am analysing a hollow cylinder whose meshing is difficult .It has dimensions of 0.004 outer dia and 0.0038 inner dia and length is 0.045 . i had tried it meshing in all the schemes like tetra/hybrid , cooper still i am not able get it done.

I tried it modelling in mm also but i dont think that the dimensions are criterion in meshing . I modelled and meshed all the faces then did the volume mesh and i also tried it meshing it directly as volume mesh still there are problems.

I modelled it by creating in two ways one by creating two volumes and subtracting and other by creating circle and extuding .

how shall i model it so meshing can be done.

thank you

Some more details would be helpful. What error messages are displayed? Is it just a hollow cylinder? No baffles or anything else in there? IMHO modelling can be done the way you like... Though I cannot imagine why copper meshing scheme doesn't work, I suggest you start meshing the edges, then the faces and finally let Gambit create the volume mesh based upon edge and face meshes.

hi first try reading the cooper mesh tutorial in GAMBIT documentattion. it has a example of hollow cylinder. try to mesh the x-sectional face(only one) first then apply cooper mesh by selecting source faces as the x-sectional faces. u will get the volume mesh.

good luck....