About William Fraser

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Boating, Fishing, Flying and other passions.

A new way to explain airflow

Elastic collision simulations used to model the kinetic theory of gas. I introduce the concept of a speed signal to explain the exchange between pressure and velocity in airflow. It is the underlying mechanism that leads to Bernoulli's equation, but it is not limited to flow with simplifying assump…

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Aerodynamics at molecular level - Introduction

This video introduces the underlying physics of how the movement of solid objects through air results in aerodynamic forces. The particle simulation is based on the kinetic theory of gas. The simulation is also used to demonstrate how diffusion causes the viscous properties of air. Previous video…

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Shock Wave simulation at molecular level (4K).

A simple physics simulation of colliding particles. The flow speed is significantly faster than the average thermal speed of the particles, resulting in typical supersonic flow behavior. Playback in 4K is recommended, lower resolutions will most likely cause a blurry, flickering mess.

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