Here's why:
* Centrifugal Force: Swirling water creates a centrifugal force that pushes things outwards, away from the center of rotation.
* Particle Size: Small particles (like dust or dirt) are easily carried by the water flow and won't be significantly affected by the centrifugal force.
* Particle Density: Heavier particles (like pebbles or sand) will tend to settle to the bottom of the pool, regardless of the swirling.
However, there are a few scenarios where you might see some separation towards the middle:
* Very Large Particles: If you have very large, relatively dense particles in your pool (like large leaves or debris), the centrifugal force might be enough to push them slightly towards the middle. However, this is unlikely to create a distinct separation.
* Artificial Swirling: If you use a powerful pump to create an artificial whirlpool in your pool, you might create a stronger centrifugal force, potentially causing some separation of particles towards the middle.
In general, the main effect of swirling pool water is to mix the water, not to separate particles.
If you want to remove particles from your pool, you need to use a filter system that can trap the particles.
