Chi Zhang

How about the improvement of this modification?

> @ChiZhangatTUM We would like to make a 3d test here too. I was wondering if you already have the elastic beam in a flow case at least in 2d?...

> > 1, add fluid shell interaction dynamics. 2, add new test case of sloshing flow with baffle 3, generalise complex dynamics according with adding third contact body to contact...

Hi all, As we have lots of issues on this PR. I will close it without merging in the following days.

> I will add it to the user_examples of this current branch in the next commit, and you can modify and add it to test with proper validation.