File:Fse-vent-flow-v3.svg

Fse-vent-flow-v3.svg (SVG file, nominally 900 × 600 pixels, file size: 10 KB)

Summary

Outflow velocity in the doorway of the worked example, from the two-layer formula. Based on Emmons (2002), pp. 2-37–2-39.

Original illustration for Vent flow, level 4 Expert.

Source basis: Emmons (2002), p. 2-37 (Equation 32, two-layer method; inflow cannot be determined with sufficient accuracy) and p. 2-39 (example data: 1.83 m by 0.737 m vent, neutral axis 1.00 m, Ta = 294.3 K, Tu = 411.9 K)
Alt text: Chart of height in a doorway against outflow velocity: zero at 1.0 m, rising along a square-root curve to about 2.6 m/s at 1.83 m.

New drawing by Fire Safety Academy. © Fire Safety Academy.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:17, 2 November 2026		900 × 600 (10 KB)	Jan (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Short title	Outflow velocity in the doorway of the worked example, from the two-layer formula. Based on Emmons (2002), pp. 2-37–2-39.
Image title	Chart of height in a doorway against outflow velocity: zero at 1.0 m, rising along a square-root curve to about 2.6 m/s at 1.83 m. Source basis: Emmons (2002), p. 2-37 (Equation 32, two-layer method; inflow cannot be determined with sufficient accuracy) and p. 2-39 (example data: 1.83 m by 0.737 m vent, neutral axis 1.00 m, Ta = 294.3 K, Tu = 411.9 K)
Width	900
Height	600