Add common simulation functions

[johannesring]

In this pull request I have added a set of functions in a new file called simulation_common.py. These functions provides various functionalities for mesh and data handling, as well as some flow analysis. Here's a short summary of each function:

• load_mesh_and_data: Loads mesh, boundary data, and domain data from an HDF5 file.

• print_mesh_summary: Prints geometric information about a volumetric mesh.

• load_mesh_info: Loads and processes mesh information from a JSON file, returning various parameters like inlet IDs, outlet IDs, wall ID, mean flow rate, area ratios, and inlet areas. The information in the JSON file is currently not always correct, so this function is not so useful yet.

• load_probe_points: Loads probe points from a file based on the mesh file's path.

• print_probe_points: Prints velocity and pressure at specified probe points.

• peval: Allows parallel synchronized evaluation of a function. This is used for probes.

• calculate_and_print_flow_properties: Calculates and prints flow properties such as flow rate, velocity, CLF numbers and Reynolds numbers.

[keiyamamo]

Looks very nice! I’ve been meaning to bring up the usage of project for computing CFL number but didn’t have a chance to do it. Yet, I noticed it was extremely slow when I used it for post-processing, so I would really like to avoid using it especially with turtle. Please let me know if you want me to work on this.

[jorgensd]

Some minor comments. In general a very nice and well written PR.

In general I wonder if we should switch print statements with a logger, as it would make it easier to turn on and off such statements.

[johannesring]

Thank you both for your comments! I have addressed some of them now and will look at the other comments later.

[johannesring]

I think we have addressed all the comments. Is this ready to be merged? @jorgensd