scholarly journals Application of a compressible flow solver and barotropic cavitation model for the evaluation of the suction head in a low specific speed centrifugal pump impeller channel

2015 ◽  
Vol 656 ◽  
pp. 012065 ◽  
Author(s):  
P Limbach ◽  
T Müller ◽  
R Skoda
Keyword(s):  
Centrifugal Pump ◽  
Compressible Flow ◽  
Cavitation Model ◽  
Pump Impeller ◽  
Flow Solver ◽  
Low Specific Speed ◽  
Specific Speed ◽  
Centrifugal Pump Impeller

scholarly journals Study on the Design Method of Impeller on Low Specific Speed Centrifugal Pump

2015 ◽  
Vol 9 (1) ◽  
pp. 594-600
Author(s):  
Jianhua Liu ◽  
Xiangyang Zhao ◽  
Miaoxin Xiao
Keyword(s):  
Numerical Simulation ◽  
Centrifugal Pump ◽  
Design Method ◽  
Simulation Method ◽  
Design Methods ◽  
Pump Impeller ◽  
External Characteristic ◽  
Low Specific Speed ◽  
Specific Speed ◽  
Centrifugal Pump Impeller

In this work, the comparative study has been done for five kinds of design methods of the low specific speed centrifugal pump impeller adopted numerical simulation method by software of Fluent, so that the problems can be solved. Many different design methods exists for the low specific speed centrifugal pump impeller, which caused the design effect difficult to control. The numerical simulation method based on the Reynolds time averaged N-S equations (RANS) and RNG κ-ε turbulence models. Results revealed the inner flow pattern of these impeller, and these results were verified by external characteristic experiment. The research results showed that the design method, which adopted compound impeller with short blades and these short blades turned to the suction surface of long blades. Results proved that its flow distribution is even and external characteristic curve is more ideal.

711 Study on Exit Flow of a High-Specific Speed Centrifugal Pump Impeller

2001 ◽  
Vol 2001.50 (0) ◽  
pp. 373-374
Author(s):  
Koji Kikuyama ◽  
Yutaka Hasegawa ◽  
Eiji Asakura ◽  
Yukitoshi Ota
Keyword(s):  
Centrifugal Pump ◽  
Pump Impeller ◽  
Specific Speed ◽  
Centrifugal Pump Impeller

Study on Exit Flow of a High-Specific Speed Centrifugal Pump Impeller in Cavitating Condition

2003 ◽  
Vol 2003.52 (0) ◽  
pp. 35-36
Author(s):  
Yutaka HASEGAWA ◽  
Koji KIKUYAMA ◽  
Eiji ASAKURA ◽  
Rebun MATSUZAWA
Keyword(s):  
Centrifugal Pump ◽  
Pump Impeller ◽  
Specific Speed ◽  
Centrifugal Pump Impeller

726 Effects of cavitating Condition on Exit Flow in High-Specific Speed Centrifugal Pump Impeller

2005 ◽  
Vol 2005.54 (0) ◽  
pp. 267-268
Author(s):  
Yutaka HASEGAWA ◽  
Koji KIKUYAMA ◽  
Eiji ASAKURA ◽  
Hiroki SHINTANI
Keyword(s):  
Centrifugal Pump ◽  
Pump Impeller ◽  
Specific Speed ◽  
Centrifugal Pump Impeller

Rotating Cavitation in a Centrifugal Pump Impeller of Low Specific Speed

2002 ◽  
Vol 124 (2) ◽  
pp. 356-362 ◽  
Author(s):  
Jens Friedrichs ◽  
Gu¨nter Kosyna
Keyword(s):  
Centrifugal Pump ◽  
High Speed ◽  
Incidence Angle ◽  
Normal Operation ◽  
Pump Impeller ◽  
Wide Range ◽  
Low Specific Speed ◽  
Specific Speed ◽  
Cavity Closure ◽  
Operating Points

The paper describes an experimental investigation of two similar centrifugal pump impellers of low specific speed. Both impellers show rotating cavitation over a wide range of part load operating points. The occurrence of this phenomenon produces a characteristic shape of creeping head-drop compared to the more usual sudden head-drop at “normal” operation points. The onset of rotating cavitation can be assigned to a certain value of the parameter σ/2α meaning the cavity volume in relation to the incidence angle. Optical analysis by video and high-speed camera techniques illustrates the development of this instability mechanism which is mainly driven by an interaction of the cavity closure region and the following blade. Combining these observations and the results of a fourier-transformation the characteristic propagation frequencies of rotating cavitation can be presented for one impeller.

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