after creating a 2d cylinder within Gambit, i transfered the mesh into fluent and ran a grid check which failed and i also recieved a message saying "non-positive volumes exist" and "non-positive face area exists".

any suggestions? thanks

David

Did you take a real close look at your mesh in Gambit? Check for areas where the lines of the cells may have crossed. I have had that happen when meshing an area with a strong curvature and tried fitting a mesh to a boundary layer. Also check the mesh quality in Gambit, and identify the areas with the most skewness.

Are you axisymmetric? If so, then the axis of rotation has to be coincident with the x-axis, and your entire grid must be above the x-axis.

Hope this helps, and good luck, Jason