The flow patterns in centrifugal pump impellers with three and seven blades, respectively, were measured using a cylindrical yaw probe and an oil surface flow method. The measured distributions of velocities and pressures for the seven (sufficient number) blade impeller at the design flow rate coincide well with the numerical solution obtained from the theoretical equation based on a potential flow. The flow patterns of the three (insufficient number) blade impeller deviate largely from those of the seven blade impeller both at the design and off-design conditions. The values of the slip factor deduced from the data of velocity measurements in the impeller passage were compared with those calculated by commonly-used formulae, and considerably good agreement was obtained for the seven blade impeller.
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December 1980
Research Papers
Velocity and Pressure Distributions in the Impeller Passages of Centrifugal Pumps
M. Murakami,
M. Murakami
Department of Mechanical Engineering, Nagoya University, Nagoya, Japan
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K. Kikuyama,
K. Kikuyama
Department of Mechanical Engineering, Nagoya University, Nagoya, Japan
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E. Asakura
E. Asakura
Department of Mechanical Engineering, Nagoya University, Nagoya, Japan
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M. Murakami
Department of Mechanical Engineering, Nagoya University, Nagoya, Japan
K. Kikuyama
Department of Mechanical Engineering, Nagoya University, Nagoya, Japan
E. Asakura
Department of Mechanical Engineering, Nagoya University, Nagoya, Japan
J. Fluids Eng. Dec 1980, 102(4): 420-426 (7 pages)
Published Online: December 1, 1980
Article history
Received:
September 1, 1979
Online:
October 26, 2009
Citation
Murakami, M., Kikuyama, K., and Asakura, E. (December 1, 1980). "Velocity and Pressure Distributions in the Impeller Passages of Centrifugal Pumps." ASME. J. Fluids Eng. December 1980; 102(4): 420–426. https://doi.org/10.1115/1.3240714
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