うず巻ポンプの羽根車内におけるキャビテーション発生状態 : うず巻ポンプのキャビテーション発生状態と吸込性能の研究, 第2報

概要

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Cavitation aspects in the centrifugal pump impeller have been investigated considerably so far, and yet there is lacking in the detailed observation on the growing processes of the cavitation ensuing its inception. Then, the aspects of the inception of cavitation and its growth in a centrifugal pump impeller were observed by a stroboscope and photographed by means of micro-flashes, over the extensive ranges of speed, discharge and suction static pressure of the pump. In this paper, we clarified the growing processes of cavitation zones and their three dimensional shapes under various operating conditions, then explained the causes of their behavior by the flow conditions in the impeller passage. Besides, the occurrence of distinctive phenomena such as the sudden change of direction of the characteristic curve of the pump and the cavitation on the convex surface of the blade at small flow-rate were reported.
一般社団法人日本機械学会の論文
1963-05-25