Effect of Impeller Outlet Angle on Performance and Internal Flow of Centrifugal Pump for High-Viscosity Liquids
スポンサーリンク
概要
- 論文の詳細を見る
In using high viscosity liquid in a centrifugal pump, it is an embarrassing problem that pump performance decreases as the viscosity becomes higher. It is caused by the change of the efficiency due to the various losses such as the disk friction loss, the loss owing to the channel flow inside of impellers, the shock loss, the leakage loss, and so on. In the previous paper, it was descrived to the pump performance for the change of impeller outlet angle and the analysis of shaft power. In this paper, it was clarified that the effect of the Reynolds number on the loss owing to the channel flow inside of impellers, the slip factor at the impeller outlet port and the shock loss at the impeller inlet port for the change of the impeller outlet angle, when high-viscosity liquids were pumped up. Further, it was clarified that the state of the slip and the secondary flow in the channel flow inside of impeller by using the depth taft method for the visualization of the inside flow of impeller. And, an open type impeller having 6 blades in number was used for the experiment, and its impeller outlet angle was 10°, 20°, 40°, 60° and 73°. The Reynolds number in the experiment was in range of 1.78×10^4∿2.67×10^6.
著者
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Ohta Hiroaki
Department Of Mechanical Engineering Tokai University
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Aoki Katsumi
Department Of Mechanical Engineering
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Aoki Katsumi
Department Of Production Engineering School Of Engineering
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Ohta Hiroaki
Department Of Production Engineering School Of Engineering
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Ohta Hiroaki
Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501, Japan
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AOKI Katsumi
Department of Production Engineering, School of Engineering
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