Hello,
I am relatively new to the autodesk CFD suite but have experience of other CFD suites.
I am having issues with my current CFD task. I am trying to investigate flow distrubution in a thin but wide channel through a felt material. This is at low flow speeds, using a custom fluid to match our working fluid, using a custom porus material for the felt.
There are some issues with the model/set up that results in the summary values not converging. I've gone back to basics and removed the PM, custom fluid & made some CAD edits to make a single fluid volume.
When conducting a mesh convergence study i find that the summary values do not converge and give values that do not match the BCs. eg non matching mass flow rates, high pressures at 0 gauge pressure outlet etc.
I beleive the issue to be to do with the meshing of the small thickness CAD geometry. roughly 200*200*0.9mm size with flow along the flat plane.
The mesh diagnostic tool highlights the 0.9mm edge surfaces as an issue. I have tried various mesh refinements but the disagnostic tool still picks up these surfaces and i still have issues.
Any advice on how to deal with this?
Any meshing refinment tips for a thin fluid volume like this?
Any other settings that I should try for a slow flow through a flat * thin volume like this? eg turbulence models?
CFD 2026
Inventor pro 2026 used for CAD models
200*200*0.9mm size
Reynolds no 80 on inlet & outlet pipes, <5 in wide flow field.
Hydrostatic on
Fluid = blood (as similar properties)
Thanks for your help!
