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Numerical investigation of 2D transonic shock-buffet around a NACA 0012-34 airfoil using OpenFOAM

Creating the Singularity image

To make results reproducible, a Singularity image containing OpenFOAM is used to perform simulations. To install Singularity, follow the official installation instructions. More information on the image may be found here. Building the image requires root privileges. Once the image is built, any user can use the image without any extra privileges. To build the image, run:

sudo singularity build of2006-py1.6-cpu.sif Singularity.def

To check if the image is working, run:

singularity run-help of2006-py1.6-cpu.sif
# ...
# expected output
# ...
  Simple Singularity image containing OpenFOAM-v2006
  and libtorch (PyTorch 1.6). The generic syntax to execute
  a command with arguments is

  singularity run image_name.sif command [path] [argument]

  Examples:

  - compile the application tensorCreation using wmake
    singularity run of2006-py1.6-cpu.sif wmake test/tensorCreation/

  - clean tensorCreation build
    singularity run of2006-py1.6-cpu.sif wclean test/tensorCreation/

  - run tensorCreation
    singularity run of2006-py1.6-cpu.sif ./tensorCreation test/tensorCreation/

Performing a simulation

The folder test_cases contains all basic OpenFOAM simulation cases. Simulations should be performed in the run directory, which is not tracked by the version control system. A typical workflow to run a simulation may look as follows:

# top-level folder of the repository
mkdir run
# make a copy of the simulation case
cp -r test_cases/naca0012-34-base/ run/test_base
# execute the runCase script in the top-level folder where the image is located
# the first argument must be the path to the simulation case
./runCase run/test_base/
# post-processing using local ParaView installation
cd run/test_base
paraview post.foam

If the simulation is performed in parallel, make sure to select Case Type -> Decomposed Case in ParaView. To see the mesh properly, make sure to unselect Decompose polyhedra.