DEM example with a particle discharge from a plate with ASC and LB

[acdaigneault]

Description

The example is a simple case of particle discharging from a plate that compares the computational performance and the angle of repose of simulations using the Adaptive Sparse Contacts, the dynamic Load Balancing and both of them from a baseline simulation.
The simulations have 52000 particles and run under 45 minutes each.
This is the first example describing the ASC method.

Miscellaneous (will be removed when merged)

I will have to rebase to master after the example of Cleo is merged because of the conflicts in the .rst DEM exemples page.

Checklist (will be removed when merged)

See this page for more information about the pull request process.

Code related list:

• Lethe documentation is up to date
• The branch is rebased onto master
• Code is indented with indent-all and .prm files (examples and tests) with prm-indent
• Links are added to parent .rst files
• The example is following the standard format

Pull request related list:

• Labels are applied
• There are at least 2 reviewers (or 1 if small feature) excluding the responsible for the merge
• If this PR closes an issue or is related to a project, it is linked in the "Projects" or "Development" section
• If any future works is planed, an issue is opened
• The PR description is cleaned and ready for merge

[blaisb]

one file left. I will look at it this PM

[hepap]

I have review the .rst. I will complete my review tomorrow :)

Really nice example!

[oguevremont]

Great work! I have no major comment

[blaisb]

Personally I don't have additional comments atop the already good ones that have been posted here.

[AmishgaAlphonius]

Great work! And amazing figures!! I have a few minor comments :)

[blaisb]

I'll just wait for the last comments to be addressed and the ok from @hepap. Once those are OK, you can add the reviewed and ready to merge label :)

[hepap]

Very nice! :)

[acdaigneault]

I think I adressed all comments, thank you guys :)