[Molonski]

Hi everyone,

I'm modeling a 2d compliant tube. I specify downward movement of the bottom wall via DEFINE_GRID_MOTION UDF, and the fluid domain remeshes ok but I'm having difficultly getting the inlet and outlet walls to remesh and increase the no. of nodes. The attached images show the simple geometry, prior to deformation and after the wall has been deformed. As you can see the outlet wall (red line) does not remesh. I've tried setting both inlet and outlet as deformable in the dynamic mesh zones and adjusting the length scale values based on the zone scale info but it still does not remesh. Any help would be much appreciated.

[vasava]

For inlet and outlet you can fix its position by using DEFINE_GEOM macro. See the following example:

DEFINE_GEOM(plane, domain, dt, position)
{
	position[1] = R;
}

Then in the Dynamic Mesh Zones Dialog Box set the inlet and the outlet as Deforming.

In the Geometry Definition tab select user-defined and in the Geometry UDF select plane i.e the name of the UDF function.

In the Meshing Options enable Smoothing.

I hope this helps.