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Agriculture & Environmental

Fire Rate of Spread (Rothermel)

R = R0·(1+U)^1.5·(1+2·φs)
Fire Rate of Spread (Rothermel)

Wildfire spread accelerates nonlinearly with wind; sweeping the slope factor shows how a steeper hillside, which preheats fuel ahead of the front, multiplies the rate of spread on top of the wind effect.

Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own Gif encoder (no GPU, no ffmpeg, no external packages).