Flame surface

Japanese: 火炎面 - かえんめん
Flame surface

...Such flame propagation in a flammable atmosphere actually occurs in the cylinders of automobile engines and in gas explosions inside buildings. In addition, these flame propagation phenomena are considered to be a phenomenon in which a narrow heat pulse moves through space, so they are sometimes likened to waves and called combustion waves, and the front of the flame is called the flame front, following the wave front. Furthermore, when the flame propagation is significantly accelerated, a shock wave is accompanied by the flame front, which is called a detonation or detonation, and shows completely different characteristics from the flame propagation mentioned above (see the section on explosions).

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このような可燃性雰囲気中の火炎伝播は,自動車エンジンのシリンダー内や建物内のガス爆発などで実際に起こっている。また,これらの火炎伝播現象は幅の狭い熱パルスが空間を移動する現象とみなされるので,これを波動に見たてて燃焼波と呼ぶこともあり,このとき火炎の前面を波面にならって火炎面という。さらに火炎の伝播が著しく加速を受けると火炎面に衝撃波を伴うようになるが,この状態は爆ごう(轟)またはデトネーションと呼ばれ,前記の火炎伝播とはまったく異なった特性を示す(〈爆発〉の項参照)。…

※「火炎面」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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