[michielm]

I am currently working with snappyHexMesh to create a mesh which has a number of regions cut out. I have named these "obstacle1","obstacle2" etc

All these obstacles should have the same boundary conditions. When setting them I am already using the following structure:

obstacle1_region0
    {   
        type fixedValue;
        value uniform 3;
    }   

    obstacle2_region0
    { 
      $obstacle1_region0;
    }

     obstacle3_region0
    { 
      $obstacle1_region0;
    } 

etc

This saves me some time, but it is still a little annoying to have to add new obstacles in U, p, alpha1 every time I change the number of obstacles.

My question is:
is it possible to set the boundary condition for patches with repetitive names in 1 go? I could imagine that would look something like this:

obstacle$i_region0 
{
     type fixedValue;
     value uniform 3;
}

[haakon]

You can use regular expressions in the patch names, like:

"obstacle.*"
{
     type fixedValue;
     value uniform 3;
}

for all patches starting with the string "obstacle". More refined expressions can of course also be made.

[michielm]

Awesome! Thanks!