HPC modification of motorbike tutorial

OpenFoam used version:

• v1912
• v8.0

Rationale: Three different meshes are proposed, with increasing number of cells. The number of mesh cells is increased not through a mesh refinement operation, but by increasing the size of the domain. Meshes are built as follows:

• S mesh is built using the motorbike tutorial setup, with the following characteristics:
  • the background mesh is finer than the one used in the tutorial: generated cells have a 0.4 meter side, instead of 1 meter
  • the snappyHexMeshDict is the same as in the tutorial
• M and L are obtained using the mirroMesh functionality starting from the S mesh so that M is 2xS and L is 2xM
• Mesh calculation is performed using snappyHexMesh in parallel, with 16 tasks

How to build the S,M,L meshes:

• load you OpenFOAM env
• get into the desired mesh dir
• launch ./AllmeshX script, with X=S,M,L

How to run the case

• the cases can be run in the same folder where the meshes have been computed
• edit the decomposeParDict to change the number of tasks
• launch ./Allrun

info on S,M,L mehses:

• S: 8.5 mln cells
• M: 17 mln cells
• L: 34 mln cells

notes:

• consider an average execution time of about 35 minutes using 16 cores fro S mesh.
• M and L meshes will be done in few more minutes thanks to the mirroMesh function.
• if you like to activate the checkMesh option please consider more time as overall execution time
• Other larger meshes can be built using the same approach