File:Fse-froude-scaling-v3.svg

Fse-froude-scaling-v3.svg (SVG file, nominally 900 × 600 pixels, file size: 7 KB)

Summary

Critical velocity to stop smoke backflow in a corridor at full scale and in a 1/4 scale model, from Thomas's relation. Based on Klote (2002), pp. 4-279–4-280.

Original illustration for Froude scaling, level 4 Expert.

Source basis: Klote (2002), p. 4-279 (Equations 4 and 4a) and p. 4-280 (wastebasket example); Milke (2002b), p. 4-294 (scaling relations)
Alt text: Two corridors in side view: full scale 1.22 m wide with 150 kW fire and 1.45 m/s airflow; model 0.31 m wide, 4.7 kW, 0.73 m/s.

Licensing

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

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:36, 2 November 2026		900 × 600 (7 KB)	Jan (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Froude scaling

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Short title	Critical velocity to stop smoke backflow in a corridor at full scale and in a 1/4 scale model, from Thomas's relation. Based on Klote (2002), pp. 4-279–4-280.
Image title	Two corridors in side view: full scale 1.22 m wide with 150 kW fire and 1.45 m/s airflow; model 0.31 m wide, 4.7 kW, 0.73 m/s. Source basis: Klote (2002), p. 4-279 (Equations 4 and 4a) and p. 4-280 (wastebasket example); Milke (2002b), p. 4-294 (scaling relations)
Width	900
Height	600