Approximate method for calculating the characteristics of a radial flow pump

2001 ◽  
Vol 215 (4) ◽  
pp. 295-316 ◽  
Author(s):  
M A Zaher
Keyword(s):  
Approximate Method ◽  
Radial Flow ◽  
Radial Flow Pump ◽  
Flow Pump

Approximate method for calculating the characteristics of a radial flow pump

2001 ◽  
Vol 215 (4) ◽  
pp. 295-316 ◽  
Author(s):  
M A Zaher
Keyword(s):  
Approximate Method ◽  
Radial Flow ◽  
Pump Efficiency ◽  
Angle Of Incidence ◽  
Average Value ◽  
Blade Shape ◽  
Flow Through ◽  
Real Fluids ◽  
Radial Flow Pump ◽  
Flow Pump

Similarity in flow patterns between fans and pumps provides the possibility of suggesting an approximate method for calculating radial flow pump characteristics. The proposed method uses relations expressing the energy balance of real fluids. Calculations of velocity triangles are given for a flow ahead of an impeller operating in sections with half-output, recognized as an average value. The results followed the expression within blade theory for radial impellers. While the exit angle helps to understand the blade shape at the no-lift position, the impeller losses, on the other hand, are related in a certain way to the angle of incidence. Losses at different elements of the pump are treated, at a selected point of operation, as having a constant coefficient of loss. Values of losses are calculated from the actual pressure heads. The flow through spiral bodies takes an approximate kinetic model. A spiral section having the shape of a circle provides the suitable conditions guaranteeing the operation of a single impeller along its circumference while still having the same optimum value of pump efficiency. The illustrated figures are the result of calculations made on radial impellers measured from several pump investigations.

Analysis of the Rotor-Stator Interaction in a Radial Flow Pump

2009 ◽  
pp. 141-151 ◽  
Author(s):  
G. Cavazzini ◽  
G. Pavesi ◽  
G. Ardizzon ◽  
P. Dupont ◽  
S. Coudert ◽  
...  
Keyword(s):  
Radial Flow ◽  
Rotor Stator Interaction ◽  
Radial Flow Pump ◽  
Flow Pump

Rotating instability in the vaneless diffuser of a radial flow pump

2008 ◽  
Vol 17 (4) ◽  
pp. 368-374 ◽  
Author(s):  
A. Dazin ◽  
O. Coutier-Delgosha ◽  
P. Dupont ◽  
S. Coudert ◽  
G. Caignaert ◽  
...  
Keyword(s):  
Radial Flow ◽  
Vaneless Diffuser ◽  
Rotating Instability ◽  
Radial Flow Pump ◽  
Flow Pump

Identification of Critical Net Positive Suction Head From Noise and Vibration in a Radial Flow Pump for Different Leading Edge Profiles of the Vane

2013 ◽  
Vol 135 (12) ◽  
Author(s):  
S. Christopher ◽  
S. Kumaraswamy
Keyword(s):  
Radial Flow ◽  
Leading Edge ◽  
Open Circuit ◽  
Experimental Results ◽  
Experimental Investigations ◽  
Flow Rates ◽  
Noise And Vibration ◽  
Operating Condition ◽  
Radial Flow Pump ◽  
Flow Pump

Experimental investigations concerning cavitation in radial flow pump for three different leading edge profiles of the vane were carried out in an open circuit system. The operating condition of the radial flow pump under cavitating case was understood by measurement of noise and vibration along with the pump parameters for various speeds and flow rates. The outcome of the experimental results revealed that the noise and vibration were better predictors of inception and development of cavitation. Further observation inferred from critical net positive suction head (NPSH) curve of 3% head drop and critical NPSH value of noise and vibration are presented.

scholarly journals “Low Cost” Approaches for the Prediction of Rotating Instabilities in the Vaneless Diffuser of a Radial Flow Pump

2018 ◽  
pp. 965-979
Author(s):  
Banglun Zhou ◽  
Antoine Dazin ◽  
Annie-Claude Bayeul-Lainé ◽  
Jianping Yuan ◽  
Yaguang Heng ◽  
...  
Keyword(s):  
Radial Flow ◽  
Low Cost ◽  
Vaneless Diffuser ◽  
Radial Flow Pump ◽  
Flow Pump
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