Cellular structure of a hydrogen-air flame in a channel above a porous layer
Bivol G. Yu.1, Volodin V. V. 1, Golovastov S. V.1, Dentsel N. K.1, Elyanov A. E.1, Mikushkin A. Yu.1
1Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
Email: grigorij-bivol@yandex.ru, vlad@ihed.ras.ru, golovastov@yandex.ru, taliamarks@list.ru, elyanov14@physics.msu.ru, notna17@yandex.ru

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The paper presents the results of an experimental study of the cellular structure of a hydrogen-air flame propagating in a channel with a diameter of 54 mm, partially filled with porous material. Based on the results of shadow visualization of the flame, cell size distributions in a channel with different fillings of steel wool were obtained. It is shown that the average value and standard deviation of the flame cell width in a hydrogen-air mixture with a hydrogen content of 15 vol.% in a channel filled with steel wool for 66% of the cross-section are 2.5 times less than similar ones in a channel without filling. Keywords: hydrogen, combustion in a channel, distribution function, cellular flame, porous layer.
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