The Physics of Snowflake Settling in a Viscous Medium

What the Snow Globe Settling Simulator Is

The simulation models how individual snowflakes settle in a 2D cross-section of a snow globe. Each flake experiences forces due to gravity and viscous drag, leading to distinct settling patterns.

By adjusting parameters like viscosity and the number of particles, users can observe how these factors influence the motion and distribution of the flakes.

Why It Happens

The settling behavior is governed by Stokes' law, which describes the drag force on a spherical object moving through a fluid. The terminal velocity of each flake is determined by balancing gravitational forces with viscous drag.

This phenomenon is not only visually interesting but also has practical applications in fields such as aerosol science and atmospheric physics.

The Role of Viscosity

Viscosity plays a critical role in the settling process. Higher viscosity results in greater resistance to motion, slowing down the flakes more significantly.

Conversely, lower viscosity allows for faster settling, leading to different patterns and distributions within the fluid.

Particle Count and Its Impact

Increasing the number of particles in the simulation can lead to complex interactions between flakes. This can result in clustering or repulsion effects, depending on their initial positions and velocities.

These interactions are analogous to real-world scenarios where multiple particles might collide or stick together under certain conditions.

Frequently asked questions

Try it live

Everything above runs in your browser — open Snow Globe Settling Simulator (2D) and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.