Follow a stack plume downwind. Wind, effective release height and an open-terrain receptor demonstrate a reflected Gaussian concentration field.
• 3D scene parts: Stack / release; gaussian plume; wind vane / flow field; ground receptor mast; open terrain / ground reflection. • Controls: Emission rate (1–20 g/s); Wind speed (1–10 m/s); Effective release height (10–80 m); Downwind receptor (50–1000 m); Crosswind receptor offset (0–100 m). • Live readouts: Ground receptor concentration (µg/m³); Crosswind spread σy (m); Vertical spread σz (m); Wind speed (m/s). • Guided experiments: Stronger wind; Off centerline. • Four tabs (visual laboratory, curves and measurements, experiments, learn and assess), a model-verification run, a timestamped event log and a trial report.
σy = 0.12x; σz = 0.08x C = Q/(2πuσyσz) exp(−y²/2σy²) × [exp(−(z−H)²/2σz²)+exp(−(z+H)²/2σz²)] Ground z=0; g/m³ ×10⁶ = µg/m³
Steady Gaussian plume with illustrative linear spread, x>0, uniform wind and flat ground. No stability-class fitting, terrain, building downwash, chemistry or regulatory prediction. Try the preset experiments, then compare the live readouts with the equations.
Wind dilutes and transports emissions..
No. Steady Gaussian plume with illustrative linear spread, x>0, uniform wind and flat ground. No stability-class fitting, terrain, building downwash, chemistry or regulatory prediction.
Steady Gaussian plume with illustrative linear spread, x>0, uniform wind and flat ground. No stability-class fitting, terrain, building downwash, chemistry or regulatory prediction.