ジェットポンプの混合過程と性能改善に関する研究 : ノズル・スロート形状の影響(流体工学,流体機械)

概要

論文の詳細を見る
In order to improve the efficiency of a jet pump used in Boiling Water Reactors, the effects of nozzle and throat shapes on the mixing process between driving flow and induced flow in the throat and the pump efficiency were examined experimentally. The velocity profile and local skin-friction coefficient distribution in the throat were also obtained experimentally. Three kinds of nozzles, conventional throat and throat having a very gentle gradient were used. The following results were obtained. The circular nozzle with eight notches shifted the efficiency to a bit high flow rate ratio region by reduced jet size. The flower-shaped nozzle decreased the efficiency by increasing skin-friction loss caused by enhanced mixing. The throat having a very gentle gradient reduced the skin-friction loss and enhanced the efficiency.
社団法人日本機械学会の論文
2005-01-25