Reply To: Machine precision and Meshes

[Rob]

Yes, the problem there is cell definition. Re the aspect ratio, I assume there is no separation in regions with a value that high? If there is you'll want to aim for a much lower value. 

Yes, no, maybe. It depends.  Fluent performs very well in parallel, but.... If the cell count per partition is too low, or there is a lot of delay on the network/bus memory stuff (I cause work for IT, I don't solve it) you may find a model slows with more cores. The other thing to avoid are the virtual & efficiency cores on newer Windows based systems, the former means Fluent is fighting over one real core, and the latter should really only be used to run YouTube or the like while waiting for meshing to complete.