バーナ炎における乱れの影響について
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概要
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The author has studied on the combustion velocity, blow off and flash back limit on the burner flame, in which the scales of turbulence are varied by means of grids or perforated plates. The gas applied was acetylene-air mixture, and the Reynold's Nos. adopted were about 500-3000. He summarized his experimental results as follows : The combustion velocity is accelerated in proportion to the turbulent scale. The indications of the blow off and flash back limit shift toward the rich mixture provided the velocity is constsant, or toward the low flow velocity provided the mixture ratio constant. At the low Reynold's Nos. the flame stabilizing limit is influenced mainly by the diffusion of active materials or heat in the vicinity of the flame surface, and at the high Re. Nos. it is to be greatly influenced by steep increase of boundary velocity gradient caused by the turbulence.
- 一般社団法人日本機械学会の論文
- 1955-12-25