[wht]

Hi Everyone,

my simple model consists of 5 box-looking regions that are attached to one another. Only one field, electrical potential 'V', is defined. I've been trying to implement this model for my own solver, which is based on ChtMultiRegionFoam. However, the boundary of the first region must be coupled with the boundary on the fifth region. So, I'm struggling with how to implement this.

My first idea was to do it with the help of groovyBC:

boundary1
{
  type groovyBC;
  gradientExpression "(V1-V2)/R";
  variables "V1=V;V2@boundary2=V";

where boundary2 is on another, the fifth, region. The problem is groovyBC doesn't see the boundaries in other regions. The geometry is in the attachment.

Any ideas?

Best wishes,
Ilya