Gaussian BumpΒΆ

Learning targets

  • Define a surface texture between two homogeneous layers
  • Define a Gaussian bump like surface by a inline Python expression

This example constructs a Gaussian bump between two homogeneous layers:

_images/ex3d_gaussian_bump_mesh.png

.jcm Input File

  • layout.jcm [ASCII]

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    Layout3D {
  Name = "Layout3DA"
  UnitOfLength = 1e-9
  
  MeshOptions {
    MaximumSideLength = 10
  }
  Extrusion {
    Objects {
      Parallelogram {
        Name = "CoDo"
        DomainId = 1
        Height = 100
        Width = 100
        Boundary {
          Class=Transparent
        }
      }
    }
    MultiLayer {
      LayerInterface {
        BoundaryClass = Transparent
      }
      Layer {
        Thickness = 10
        DomainId = 1
      }
      Layer {
        Thickness = 20
        DomainId = 2
      }
      LayerInterface {
        Texture {
          Python {
            Expression = "value=40*exp(-3e-3*X[0]*X[0]-3e-3*X[1]*X[1])"
          }
          MeshOptions {
            MaximumSideLength = 5	
            LowerDomain {
              MaximumSideLength = 10	             
            }
            UpperDomain {
              MaximumSideLength = 10	
            }
          }
        }
      }
      Layer {
        Thickness = 50
        DomainId = 3
      }
      
      LayerInterface {
        BoundaryClass = Transparent
      }
    }

Note

A texture can be placed within each LayerInterface section, i.e. also between two stacked layouts. This allows to define the meshing quality on both sides of the texture individually.