I want to visualize periodic changes in the density of a gel-like fluid due to external forces. The fluid is contained in a hollow cylinder in which I have modeled a "cutaway" section.
I would have imagined to just visualize the fluid as a 2D surface which is darker in some areas and lighter in other. Two different states should probably be sufficient, as long as I manage to get a nice transition between these two states.
Does any of you have an idea how I could do so?