高粘度液用渦巻ポンプの滑り係数に対するレイノルズ数の影響

概要

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In this paper, the performance test is carried out by the systematical change of blade number, blade outlet angle and the Reynolds number for pumping high-viscosity liquids, and the pump performance has required the slip factor in the maximum efficiency point. It was clarified that the slip factor depends upon the Reynolds number, blade number and blade outlet angle. In addition, the experimental formula for the slip factor including blade number, blade outlet angle and the Reynolds number has been presented from these results. Then, it was confirmed that this experimental formula predicts fairy well the experimental results in the region of low that Reynolds number. Further, this experimental formula are examined by comparing with the results of Toyokura et al. and the results of slip factor using the pump head of the finite blade number of impeller. It was shown that this experimental formula was useful in practical use for region of low the Reynolds number. These impellers used for the experiment are open type and two-dimensional except the near entrance. The blade thickness is 5 mm. The blade outlet angles are 10°, 20°, 40°, 60° and 73°, and the blade numbers are 3, 4, 6 and 8. The range of the Reynolds number of the experiment is 1.78×10^4〜2.67×10^6.
一般社団法人日本機械学会の論文
1999-11-25