https://fire-safety.academy/w/index.php?action=history&feed=atom&title=File%3AFse-deflagration-to-detonation-transition-v1.svg 2026-11-04T14:06:11Z Revision history for this page on the wiki MediaWiki 1.43.11 https://fire-safety.academy/w/index.php?title=File:Fse-deflagration-to-detonation-transition-v1.svg&diff=2533&oldid=prev 2026-11-02T16:46:35Z

<p>Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity</p> <p><b>New page</b></p><div>== Summary ==<br /> 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.<br /> <br /> Original illustration for [[Deflagration-to-detonation transition]], level 4 Expert.<br /> <br /> * 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<br /> * 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.<br /> <br /> == Licensing ==<br /> New drawing by Fire Safety Academy. © Fire Safety Academy.</div>

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