liujiamingustc / OpenFOAM-repeatMesh

Repeats a blockMesh grid to have x * y * z instances of the original grid.

OpenFOAM-repeatMesh

Repeats a blockMesh grid to have x * y * z instances of the original grid. The number of instances (x, y, z) in one direction is equal to the number of repetitions in that direction minus one.

The cell faces at the boundaries of the original blockMesh grid must match in order to successfully repeat the mesh.

This software was initially developed and tested using the OpenFOAM-4.x open source CFD toolbox from OpenFOAM Foundation. Current version has been tested with:

• OpenFOAM-6
• OpenFOAM-8

Usage

repeatMesh.sh [OPTIONS]

Options

  -x <integer>      number of instances in X direction
  -y <integer>      number of instances in Y direction
  -z <integer>      number of instances in Z direction
  -no-blockMesh     do not run blockMesh
  -dict <file>      specify alternative dictionary for the blockMesh description
  -region <name>    specify alternative mesh region
  -help             print the usage

Example case example_repeatMesh

The example case was based on the turbineSiting tutorial available in OpenFOAM-4.x, located at $FOAM_TUTORIALS/incompressible/simpleFoam/turbineSiting, without snappyHexMesh refinement.

To run, load OpenFOAM environment variables and run genMesh.sh. Assuming OpenFOAM is installed at /opt/openfoam/OpenFOAM-4.x, the following instructions will generate an 3x5 array of wall mounted cubes from a single cube whose mesh is specified at system/blockMeshDict:

source /opt/openfoam/OpenFOAM-4.x/etc/bashrc

cd example_repeatMesh

./genMesh.sh

which is being controlled at the last line in genMesh.sh script, namely:

../repeatMesh.sh -no-blockMesh -x 3 -y 5

Examples of a 3x3 and 16x16 arrays are shown below.

Copyright notice

Copyright (C) 2018 by Carlos Veiga Rodrigues [e-mail]. All rights reserved.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

For more details consult the GNU General Public License at: http://www.gnu.org/licenses/gpl.html.