I think including the ability to create structured grids using the OpenFOAM BlockMesh tool would be very beneficial. For those not familiar with BlockMesh, this is a built-in tool for OpenFOAM that allows the user to create simple grids for both 2D and 3D analysis. The grid is controlled using a small text file that describes the domain of the problem. Below is a copy of the BlockMeshDist for analysis of the 2D turbulence in a box validation case:
1/*--------------------------------*- C++ -*----------------------------------*\
2| ========= | |
3| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
4| \\ / O peration | Version: v1812 |
5| \\ / A nd | Web: www.OpenFOAM.com |
6| \\/ M anipulation | |
7\*---------------------------------------------------------------------------*/
8FoamFile
9{
10 version 2.0;
11 format ascii;
12 class dictionary;
13 object blockMeshDict;
14}
15// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
16
17scale 0.1;
18
19vertices
20(
21 (0 0 0)
22 (1 0 0)
23 (1 1 0)
24 (0 1 0)
25 (0 0 0.1)
26 (1 0 0.1)
27 (1 1 0.1)
28 (0 1 0.1)
29);
30
31blocks
32(
33 hex (0 1 2 3 4 5 6 7) (20 20 1) simpleGrading (1 1 1)
34);
35
36edges
37(
38);
39
40boundary
41(
42 movingWall
43 {
44 type wall;
45 faces
46 (
47 (3 7 6 2)
48 );
49 }
50 fixedWalls
51 {
52 type wall;
53 faces
54 (
55 (0 4 7 3)
56 (2 6 5 1)
57 (1 5 4 0)
58 );
59 }
60 frontAndBack
61 {
62 type empty;
63 faces
64 (
65 (0 3 2 1)
66 (4 5 6 7)
67 );
68 }
69);
70
71mergePatchPairs
72(
73);
74
75// ************************************************************************* //
This file creates a box that is 1m long, 1m tall, and 0.1m deep. It also names the various boundaries of the box accordingly. As previously mentioned, this grid setup is used for the lid-driven cavity turbulence in a box validation problem. Other similar problems that can be calculated using this method include the Backwards Facing Step, most 2D airfoil analyses, and an Axisymmetric Methane Flame.