3D QRA / FEA VectorPlume 3D Arbitrary 3D Wind-to-Jet Flammable & Toxic Gas Dispersion Model
Discharge Mass Rate
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Birch Pseudo-Source d_ps
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Wind-to-Jet Angle
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Upwind Stagnation / Reversal
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LFL Hazard Envelope
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Flammable Mass / Toxic Extent
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Camera:
3D Shell Contours:
Left-drag: Orbit  |  Right-drag / Shift+drag: Pan  |  Scroll: Zoom
3D Receptor Point Concentration Probe:
1. Hazard Threshold Footprint & Cloud Inventory Summary
Separates Downwind extent, Upwind counter-flow penetration (against wind), and Cross-wind lateral deflection / symmetric half-width.
Hazard Threshold Category Target Concentration Path Length s (m) Downwind Extent (m) Upwind Extent (m) Crosswind Extent (m) Max Cloud Width (m) Elevation Z Range (m) Cloud Volume (m³) Gas Mass in Cloud (kg)
2. Multi-Direction Wind Sensitivity Comparison (0° Co-Wind to 180° Head-On Wind)
Automatic directional sweep holding discharge geometry fixed while rotating wind direction around the compass.
Relative Wind Angle Flow Regime Wind From → Toward Threshold Path Length s (m) Downwind Extent (m) Upwind Penetration (m) Crosswind Extent (m) Stagnation Point (m UW) Max Width (m) Cloud Mass (kg)
3. Step-by-Step 3D Lagrangian Plume Trajectory & Dilution Profile
Tracks 3D coordinates (X, Y, Z), wind-frame coordinates, velocity vector, plume dimensions, temperature, density, and concentrations.
Step Path s (m) East X (m) North Y (m) Height Z (m) Along-Wind (m) Cross-Wind (m) Speed (m/s) Heading / Pitch Width 2by × 2bz (m) Temp (°C) Density (kg/m³) Flam Peak (% vol) Flam Peak (ppm) Toxic Mean (ppm)