This is a fluid physics simulator I built to observe how different fluids interact with each other and certain obstacles- such as leaves, logs, and stones, under different settings on gravity.

It includes a set of 3 fluids- water, oil and honey.

Hold the left mouse button in the canvas while on inject mode to insert the liquid. Do the same on suck mode to remove the liquid.

Click on the add obstacle button to insert one of 3 different obstacles at random: Leaf (green), Log (brown), Stone (gray)

Use the gravity slider to adjust gravity levels for all entities.

It uses the FLIP solver concept. It can be understood in detail here: https://matthias-research.github.io/pages/tenMinutePhysics/

ps.- the reason different liquids fall with different speeds is because I imagine them flowing down from a black slate, instead of free-fall in space.