File:Fse-deflagration-to-detonation-transition-v3.svg

Fse-deflagration-to-detonation-transition-v3.svg (SVG file, nominally 900 × 600 pixels, file size: 12 KB)

Summary

Critical pipe diameters derived from the detonation cell width: below one third of the cell width a detonation cannot propagate along a pipe, and below 13 cell widths it cannot pass from a pipe into a larger volume. The line marks a 1 cm fuel line. Based on Zalosh (2002), p. 3-412.

Original illustration for Deflagration-to-detonation transition, level 4 Expert.

Source basis: Zalosh (2002), p. 3-412 (Table 3-16.4 and the Sc/3 and 13 Sc criteria) and p. 3-413 (Example 6, 1 cm fuel line)
Alt text: Chart of two critical pipe diameters for nine gases on a logarithmic axis, with a vertical line at 1 cm.

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

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:46, 2 November 2026		900 × 600 (12 KB)	Jan (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Deflagration-to-detonation transition

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Short title	Critical pipe diameters derived from the detonation cell width: below one third of the cell width a detonation cannot propagate along a pipe, and below 13 cell widths it cannot pass from a pipe into a larger volume. The line marks a 1 cm fuel line. Based on Zalosh (2002), p. 3-412.
Image title	Chart of two critical pipe diameters for nine gases on a logarithmic axis, with a vertical line at 1 cm. Source basis: Zalosh (2002), p. 3-412 (Table 3-16.4 and the Sc/3 and 13 Sc criteria) and p. 3-413 (Example 6, 1 cm fuel line)
Width	900
Height	600