A simple airflow simulation for the D150 conceptual aircraft using OpenFOAM and Slurm

This is a simple test case to verify a workflow of automatic mesh creation with TiGL. The simulation parameters have not been chosen for a high level of realism! So please don't build this aircraft and expect it to fly...

Usage

Clone this repository

git clone https://github.com/joergbrech/simpleFoamAirflowD150.git

and change the directory

cd simpleFoamAirflowD150

Make sure there exists a module named openfoam/v1702 that loads the OpenFOAM installation and the necessary MPI software into the environment. If needed, edit the corresponding line in TiGL_D150_08_16.sh that loads this module. If you have access to the HBRS cluster and don't know what any of this means, let me know, I can help you set up the module system.
Submit the job specified by the script TiGL_D150_08_16.sh:
```
sbatch TiGL_150_08_16.sh
```
On the compute cluster at the H BRS, the calculation takes about four minutes. You can check the status with
```
squeue -u USERNAME
```
where USERNAME is your username.
The results are stored in simpleFoam/VTK. Copy the vtk-files e.g. using scp to your local computer and postprocess them with Paraview. That's all there is to it!

Remarks

The script TiGL_150_08_16.sh generates the OpenFOAM mesh from a .msh file located in the simpleFOAM subdirectory. Next, the boundary file of the root directory is copied to the OpenFOAM case to replace some boundary conditions, specifically the airplane surface needs to be set to wall. The boundary file is hardcoded to fit to the .msh file, as it includes the submesh names and node and cell numbers. It would not work out of the shell for another mesh.

Acknowledgements

Thanks to Paul Putin for generating the Mesh from a CPACS file created with TiGL and Gmsh and for creating the OpenFOAM case!