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Snow Avalanche Flow — 2D Voellmy Slope Model

A side-view avalanche driven by the Voellmy flow model: gravity accelerates the slide, dry friction (μ) and velocity-squared turbulent drag (ξ) slow it, and a powder cloud lifts off the moving front.

Earth2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

This 2D companion strips the avalanche down to its governing equation: a = g·sinθ − μg·cosθ − gv²/ξ, the Voellmy model used in real avalanche-hazard engineering, integrated frame by frame as the front slides down a fixed-length slope profile drawn in side view.

⚙ Under the hood

A Voellmy-model snow avalanche: dry friction μ and turbulent drag ξ oppose gravity along an adjustable slope, with live speed, distance and runout readouts.

snow avalanchevoellmy modelslope stabilityflow dynamicsturbulent drag

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install