Contents
Fse-deflagration-to-detonation-transition-v1.svg (SVG file, nominally 900 × 600 pixels, file size: 8 KB)
Summary
Flame acceleration in a duct closed at the ignition end: the expanding products push the unburned gas ahead, turbulence speeds up the flame, a shock forms and the flame becomes a detonation. Based on Simmons (2002), pp. 1-146 to 1-147.
Original illustration for Deflagration-to-detonation transition, level 4 Expert.
- Source basis: Simmons (2002), p. 1-147 (products that cannot vent push flame and unburned gas forward; turbulence ahead increases burning velocity; flame acts as an accelerating piston, shock forms, detonation at 1,500 to 3,000 m/s) and p. 1-146 (turbulence increases flame area and burning velocity); speed order of 2,000 m/s from Iqbal and Salley (2004), p. 15-3
- Alt text: Four views of the same duct showing a smooth flame, a wrinkled accelerating flame, a shock forming ahead of it, and a detonation.
Licensing
New drawing by Fire Safety Academy. © Fire Safety Academy.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:46, 2 November 2026 | | 900 × 600 (8 KB) | Jan (talk | contribs) | Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity |
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