A Study of the Combustion of Laminar Fuel Jets

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  • 層流燃料噴流の燃焼に関する研究
  • ソウリュウ ネンリョウ フンリュウ ノ ネンショウ ニ カンスル ケンキュウ

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Abstract

The flame length of laminar fuel jets issuing into the atmosphere is analyzed and it is shown that it is proportional to the flow rate of fuel gas and inversely proportional to the diffusion coefficient as that of laminar fuel jets issuing into the air flowing at the same velocity, and that the former is about 1.5 times the latter. The experiments on city gas flames in the air stream are conducted using the normal and the inverted arrangements. Experimental results show that the flame in the atmosphere is influenced by buoyancy and disturbance in the air which is caused by combustion, and that if there are no influences of buoyancy and disturbance, the experimental results on the lengths of flames in the atmosphere seem to agree with the result of the analysis. Furthermore, in this report some discussions for the effects of buoyancy and disturbance on the flame length are presented.

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