PinholeΒΆ

Learning targets

  • Transparent boundary conditions in 3D
  • Layered exterior domain

This example constructs a nano-scale circular hole in a thin layer (e.g. metal) on top of a substrate.

_images/ex3d_pinhole_mesh.png

.jcm Input File

  • layout.jcm [ASCII]

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    Layout3D {
  UnitOfLength = 1e-09
  
  MeshOptions {
    MaximumSideLength = 50
  }
  BoundaryConditions {
    Boundary {
      Direction = All
      Class = Transparent 
     
    }
  }
  Extrusion {
    Objects {
      
      Polygon { 
        Name = "ComputationalDomain/Background" 
        DomainId = 1
        Priority = -1 
        Points = [-200 -200, 200 -200, 200 200, -200 200]         
      } 
      
      Circle {
        Name = "Circle" 
        DomainId = 2
        Radius = 100
        RefineAll = 2
      }
    }
    
    MultiLayer {
      MeshOptions {
        MaximumSideLengthZ = 50
      }    
      Layer {
        Thickness = 100
        DomainId = 1
      }
      Layer {
        Thickness = 20
        DomainIdMapping = [1 2 
                           2 3]
      }
      LayerInterface {
        GeometryValues = [
        Circle/Radius = 80
        ]
        GlobalZ = 10
      }
      Layer {
        Thickness = 100
        DomainIdMapping = [1 3]
      }
    }  
  }
}