オープン形遠心羽根車の入口逆流に関する研究

概要

論文の詳細を見る
Unsteady measurements of the flow near an impeller inlet by pitot tubes and the static pressure distribution on the casing surface outside of impeller blades were carried out to investigate the inlet flow condition at low flow rates for an open-type centrifugal impeller for which the improvement of cavitation perfomrmance was taken into consideration and the blade tip clearance was comparatively large. Flow visualizations in the passage between two neighbouring blades on the rotating stream surface near the casing and on the blade surface were also performed. As a result, the reverse flow pattern at the impeller entrance was made clear. Furthermore, it was pointed out that the leakage flow through the blade tip clearance has a considerable effect on the flow near the casing wall surface just before the capacity at which the inlet reverse flow occurs.
一般社団法人日本機械学会の論文
1990-12-25