Crossleyuk wrote: ↑Mon Oct 04, 2021 9:35 am Sorry Oliver, you were correctbith times :roll:
But the calclations crearly start providing me with the Ux, Uy and Uz chart dialogue, but I then get exit with error and:
C:\Users\Michael Crossley\AppData\Roaming\FreeCAD\Mod\CfdOF\CfdResidualPlot.py:68: UserWarning: Data has no positive values, and therefore cannot be log-scaled.
Seriously wish I could follow all this.
You are prescribing a fixed input and output pressure; however the analysis is inviscid which means that there is no counterbalancing friction to balance this prescribed force and so the problem has no solution. This causes the calculation to immediately fail.oliveroxtoby wrote: ↑Mon Sep 13, 2021 7:16 pm This happens when "Use value from boundary" is chosen in the "InitialiseFields" object, but a valid boundary has not (yet) been selected. Simply double-clicking the "InitialiseFields" object should automatically choose the first suitable boundary ("inlet" in this case); click OK and all should be well. The run then fails since this is an inviscid analysis with prescribed pressure drop - changing to viscous will fix that.
If you go into "PhysicsModel" and tick "Viscous", you should find that it works.