Flame Propagation

Japanese: 火炎伝播 - かえんでんぱ
Flame Propagation

… Another type of ignition, ignition by a pilot flame, occurs when a flammable mixture receives energy from a pilot flame, causing localized spontaneous combustion in the vicinity. The difference from spontaneous ignition is that the heat source is small and the heat dissipation is large in terms of heat balance, so the temperature required for ignition is high, and flame propagation follows ignition. Pilot flames are also called ignition sources, and there are many types, but they can be roughly classified into three: electric sparks, hot surfaces, and hot gases. …

*Some of the terminology that refers to "flame propagation" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

… もう一つの発火形式である口火による発火(引火)は,可燃性の混合気が口火によってエネルギーの供給を受け,その付近で局部的に自然発火を起こす現象である。自然発火と異なる点は,熱源が小さく熱バランスのうえで放熱が大きいため,発火に要する温度が高く,また発火に引き続いて火炎伝播を伴うところにある。口火は発火源ともいわれ,その種類は多いが,おおまかには電気火花,熱面,高温ガスの三つに整理できる。…

※「火炎伝播」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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