How to simulate (floating) particles ?
This is what I am trying to do:
I want to create a sphere and put a large number of tiny particles in it in a floating state. When the sphere moves in any direction, the particles should be hitting the walls of the sphere in the opposite direction due to inertia.
However, I am not able to figure out how to insert such particles in gazebo. I have the sphere and gravity in place.
If particles aren't possible, then alternatively, if there is a way to put some liquid that does the above task then that shall work fine too.
Can someone please tell me how to accomplish this task. I haven't been able to find any pointers on this whatsoever. I am new to gazebo and stuck at this point; no solution found since days.
How about adding small spheres as particles?
And to make the small spheres float, the [buoyancy plugin](http://gazebosim.org/tutorials?tut=hydrodynamics&cat=plugins#UsingtheBuoyancyPlugin)...?
From what I have seen, cpu usage increases very fast with every new sphere spawned, which is weird for such a primitive geometric form.