羽根車上流流れの非一様性の吸込性能への影響 : 第2報,解析的検討

概要

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The method of predicting incipient cavitation based on conventional flow analyses is presented for estimating the suction performance of centrifugal pumps with distorted inflows. Three-dimensional potential flows through two type suction casings are analysed and compared with experimental results. In symmetrical bend type casing, nonuniform outlet flow of the casing is able to be predicted by suction casing flow analysis ; but the correction of pre-rotation should be considered to get a successful prediction for the case of the full volute type casing. The prediction of incipient cavitation NPSH agrees with the experimental results when the impeller flow is analysed, considering the non-uniform inlet flow of the impeller.
一般社団法人日本機械学会の論文
1988-07-25