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]

     1Layout3D {
 2  Name = "Layout3DA"
 3  UnitOfLength = 1e-9
 4  
 5  MeshOptions {
 6    MaximumSideLength = 10
 7  }
 8  Extrusion {
 9    Objects {
10      Parallelogram {
11        Name = "CoDo"
12        DomainId = 1
13        Height = 100
14        Width = 100
15        Boundary {
16          Class=Transparent
17        }
18      }
19    }
20    MultiLayer {
21      LayerInterface {
22        BoundaryClass = Transparent
23      }
24      Layer {
25        Thickness = 10
26        DomainId = 1
27      }
28      Layer {
29        Thickness = 20
30        DomainId = 2
31      }
32      LayerInterface {
33        Texture {
34          Python {
35            Expression = "value=40*exp(-3e-3*X[0]*X[0]-3e-3*X[1]*X[1])"
36          }
37          MeshOptions {
38            MaximumSideLength = 5	
39            LowerDomain {
40              MaximumSideLength = 10	             
41            }
42            UpperDomain {
43              MaximumSideLength = 10	
44            }
45          }
46        }
47      }
48      Layer {
49        Thickness = 50
50        DomainId = 3
51      }
52      
53      LayerInterface {
54        BoundaryClass = Transparent
55      }
56    }
57

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.