[Benji]

Hey everyone

Hope I am in the right Sub-Forum with this. I am simulating a hydraulic dump with interDyMFoam/AMI (see also attached image), 3D.
What I want to do is have the dump filled with water (setFields, cellZone) and then the whole part within the line "rotor" rotating. I set up the case with AMI, rotating and static part with gmsh.

I am struggling with filling the hydraulic dump with water as an initial condition: I can define the whole volume within the "rotor-circle" as one cellZone (including the hydraulic dump) and then use the dynamicMeshDict to rotate. But then, I cannot define the "hydraulic dump" part only as a cellZone that I could fill with water with setFields.
The other way would be to treat the hydraulic dump and the rest of the rotor as individual volumes, but then I have 2 cellZones that I need to rotate within my dynamicMeshDict. So my question: Is there a way to do this (without using MRF)?

Many thanks!

Ben

setFields:

  regions
  (
      zoneToCell
      {
          name "dump";
          fieldValues
          (
              volScalarFieldValue alpha.water 1
          );
      }
  );

Bonus question: When I create baffles vor the internal patches as walls, it says that patch already exists and writes the mesh to time 0.002. I'm sure this is a very trivial problem, I want to have the mesh in 0, a hint?

Bonus question 2: How can I make the rotation not just a fixed velocity, but define an acceleration?

[tomf]

Hi,

Just some quick hints.

Not sure about the first part using multiple cellZones. Maybe you can instead use cellSets for the initialization and use the cellZone for the rigid body motion.

For bonus question one: use -overwrite as option for the creation of the baffles

For bonus question two: use a funtion1 type (a table for instance)

Regards,
Tom

[CHAYANIT]

I am simulating a 2D pitching foil. I am using C mesh and using AMI. But I am not able to specify the moving cellZone. I using Gmsh mesh generator.
Regards
Chayanit