Stacked LayoutsΒΆ

Learning targets

  • Stack extrusion layouts
  • Use individual meshing options within each layout

With stacking several layouts on top of each other more complicated geometries become feasible for JCMsuite. However, this example shows that it might be advantageous to use stacked layouts also for geometries easily constructed by one single extrusion layout, when we want to use coarser meshes in certain layers of the extrusion. This is for example the case, when one layer has a high refractive index material with smaller local wavelength, requiring a fine mesh only there.

_images/ex3d_stacked_layouts_mesh1.png

.jcm Input File

  • layout.jcm [ASCII]

      1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
    Layout3D {
  UnitOfLength = 1e-09
  
  MeshOptions {
    MaximumSideLength = 50
  }
  Extrusion {
    Objects {
      Polygon { 
        Name = "ComputationalDomain/Background" 
        DomainId = 1
        Priority = -1 
        Points = [-200 -200, 200 -200, 200 200, -200 200] 
        Boundary {
          Class = Periodic
        }
      }
    } 
    
    MultiLayer {
      MeshOptions {
        MaximumSideLengthZ = 50
      }    
      
      LayerInterface {
        BoundaryClass = Transparent
      }
      Layer {
        Thickness = 50
        DomainId = 1
      }
    }  
  } 
}

Layout3D {
  UnitOfLength = 1e-09
  
  MeshOptions {
    MaximumSideLength = 50
  }
  Extrusion {
    Objects {
      Polygon { 
        Name = "ComputationalDomain/Background" 
        DomainId = 1
        Priority = -1 
        Points = [-200 -200, 200 -200, 200 200, -200 200] 
        Boundary {
          Class = Periodic
        }
      } 
      
      Circle {
        Name = "Circle" 
        DomainId = 2
        Radius = 100
        RefineAll = 2	
        MeshOptions {
          MaximumSideLength = 20
        }
      }
    }
    MultiLayer {
      MeshOptions {
        MaximumSideLengthZ = 50
      }    
      
      Layer {
        Thickness = 100
        DomainId = 1
      }
      LayerInterface {
        GlobalZ = 0
      }
      Layer {
        Thickness = 100
        DomainIdMapping = [1 3 
        2 2]
        MeshOptions {
          MaximumSideLengthZ = 20
        }    
      }
      LayerInterface {
        GeometryValues = [
        Circle/Radius = 80
        ]
      }
      Layer {
        Thickness = 10
        DomainIdMapping = [1 3]
      }
    }  
  } 
}

Layout3D {
  UnitOfLength = 1e-09
  
  MeshOptions {
    MaximumSideLength = 100
  }
  Extrusion {
    Objects {
      Polygon { 
        Name = "ComputationalDomain/Background" 
        DomainId = 1
        Priority = -1 
        Points = [-200 -200, 200 -200, 200 200, -200 200] 
        Boundary {
          Class = Periodic
        }
      } 
    }  
    MultiLayer {
      
      MeshOptions {
        MaximumSideLengthZ = 50
      }    
      
      Layer {
        Thickness = 50
        DomainId = 3
      }
      LayerInterface {
        BoundaryClass = Transparent
      }
    }  
  } 
}