深海底鉱物揚鉱用エアリフトポンプにおける非定常流動の数値シミュレーション

概要

論文の詳細を見る
It is anticipated that the dynamical responses to changes of air supply and solid supply become more complicated in an air-lift pump for lifting deep-sea mineral resources. Then it is inevitable to grasp unsteady flow characteristics in air-lift pumps for safety operations of the systems. Therefore, the purpose of this study is to obtain safety operational conditions for air-lift pumps of lifting marine mineral resources such as manganese nodules from deep-sea floor to a mining ship. The numerical method was applied to an air-lift pump of 5, 000 m depth. In this paper, we discuss the unsteady flow characteristics of gas-liquid-solid three-phase flow in beginning and stopping of solid supply, in increasing and reducing of back-pressure, in fluctuating of solid supply, and reducing and returning of air supply from the viewpoint of practical techniques.
社団法人資源・素材学会の論文
1999-12-25