Velocities of Discrete Particles in Water Tank
Particles in a water tank can have different velocities based on their size. Here, we will discuss the velocities of discrete particles with diameter less than 0.1 mm and particles greater than 0.1 mm.

Particles with Diameter Less than 0.1 mm
- Particles with a diameter less than 0.1 mm are considered to be in the colloidal size range.
- Due to their small size, these particles experience Brownian motion, which is random motion caused by collisions with water molecules.
- The velocities of these particles can vary greatly and are typically on the order of micrometers per second.

Particles with Diameter Greater than 0.1 mm
- Particles with a diameter greater than 0.1 mm are larger and experience different forces in the water tank.
- These particles are subject to gravity, buoyancy, and drag forces, which affect their velocities.
- The velocities of these particles can be calculated using principles of fluid dynamics, taking into account the forces acting on them.
- Larger particles will have higher settling velocities compared to smaller particles due to the influence of gravity.
In conclusion, the velocities of discrete particles in a water tank depend on their size, with smaller particles experiencing Brownian motion and larger particles being influenced by gravity, buoyancy, and drag forces. Understanding these factors is essential for predicting the behavior of particles in a water tank accurately.

Water supply and sanitation