らせん細線などを挿入した管内における環状液膜流の研究 : エントレインメント抑制効果の原因と実験相関式

概要

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The entrainment rate of liquid droplets in a two-phase annular mist flow is investigated in the helically ribbed and wired tubes with the aim of suppressing the droplet entrainment to improve evaporative heat transfer in various steam generators of the one-through type. The results show that the entrainment rate in the tubes is lower than that in smooth ones. An experimental correlation is introduced between the suppression rate of the entrainment and the parameters including liquid and gas flow rates and the shape of the ribs or wires. The decrease in number of disturbance waves is supposed to be the main cause of the entrainment suppression and is brought about by the direct interaction between the disturbance waves and the helical ribs or wires.
一般社団法人日本機械学会の論文
1991-04-25