K-2231 油燃焼ボイラなどにおける噴霧挙動の数値解析のための基礎実験研究 : 気流中における液滴の分裂挙動の相互干渉(S29-3 地域エネルギーシステムにおける小型発電技術の動向(3))(S29 地域エネルギーシステムにおける小型発電技術の動向)

概要

論文の詳細を見る
Interaction between liquid droplets under breakup in gas stream was investigated experimentally, to obtain basic knowledge for developing numerical simulation model of twin-fluid liquid atomization. Pair of inline water droplets was dropped into air stream passing through an orifice, and breakup processes of droplets were observed using a high-speed video camera. When dimensionless distance between droplets was larger than about 3, each droplet broke up as a single droplet. However the upstream droplet affected breakup behavior of the downstream droplet when dimensionless distance was small. There are three representative types of interaction. Critical condition for the interaction was investigated and the mechanism of interaction was discussed. Experimental data on droplet acceleration were compared with numerical results based on drop drag and breakup model. It was shown that the conventional numerical model could not estimate acceleration as well as deformation of droplets accurately when droplet number density was high.
一般社団法人日本機械学会の論文
2001-08-22