I am trying to make a heat exchanger model using the ElmerGrid input, starting the with the holes.grd example, which I decided on to provide a simple means of design optimization. I am running into some problems with an extra surface on the outside boundary. Could anyone example why this is occuring?
Code: Select all
***** ElmerGrid input file for structured grid generation *****
Version = 210903
Coordinate System = Cartesian 3D
Subcell Divisions = 17 17 1
Subcell Limits 1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Subcell Limits 2
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Subcell Limits 3 = 0.0 5
Material Structure in 2D
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
End
Materials Interval = 1 3
Boundary Definitions
! type out int double of the boundaries
1 2 1 1
2 0 1 1
3 0 1 1
End
Numbering = Horizontal
Element Degree = 1
Element Innernodes = False
Triangles = False
Surface Elements = 2600
Coordinate Ratios = 1
Element Ratios 3 = 1 .1 .1
Element Densities 3 = .4 .1 .1
Many thanks!