Performance Characteristics of a Centrifugal Pump Impeller With Running Tip Clearance Pumping Solid-Liquid Mixtures

This paper presents extensive results on the performance of an unshrouded centrifugal pump impeller handling solid-liquid mixtures. The effect of the clearance between the impeller tip and the casing and of the solid concentration, density and mean diameter on the pump performance characteristics is investigated. The results are discussed and utilized, together with data available in the literature, to establish a correlation allowing the prediction of the head reduction factor for shrouded/unshrouded impeller centrifugal pumps handling solid-liquid mixtures. The predictions made with the proposed correlation show a better agreement with experimental results than previous ones.

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Design and Analysis of Airfoil-Shaped Impeller Blades of Centrifugal Pump

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.852.539 ◽

2016 ◽

Vol 852 ◽

pp. 539-544

Author(s):

Parth Shah ◽

M. Ashwin Ganesh ◽

Thundil Kuruppa Raj

Keyword(s):

Centrifugal Pump ◽

Transport Model ◽

Turbulence Models ◽

Suction Side ◽

3D Analysis ◽

Centrifugal Pumps ◽

Pump Impeller ◽

Outlet Pressure ◽

Shear Stress Transport Model ◽

Centrifugal Pump Impeller

This paper deals with a comparative study of the outlet pressure-energy between a conventional and normal blade impeller and an airfoil-shaped blade impeller of a centrifugal pump. Although the volute casing is an important component along with an impeller [1], the present comparative analysis makes the volute casing redundant to the study, hence neglected. All centrifugal pumps are usually designed and manufactured using backward swept blades with equal camber on the top and bottom sides. An increased camber on the top side is an ideal trait for a lift generating airfoil. The purpose is to implement the principle of lift generation of airfoil for centrifugal pumps. As a result, a local suction side and pressure side can be visualized using CFX-post processor. The 3D analysis of such a centrifugal pump impeller is designed in SOLIDWORKS® and analyzed using ANSYS® CFX. The SST (Menter’s Shear Stress Transport) model is used as it combines both the k-ω and k-ε turbulence models.

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Analysis on the Corrosion Failure of MDS Mine Multistage Centrifugal Pump Impeller

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.650.344 ◽

2013 ◽

Vol 650 ◽

pp. 344-349 ◽

Cited By ~ 1

Author(s):

Xiang Zhang ◽

Wen Ming You ◽

Yi Jun Zhou ◽

Yong Sheng Li ◽

Sheng Jie Qiu

Keyword(s):

Centrifugal Pump ◽

Fracture Morphology ◽

Prevention Measures ◽

Spectroscopy Analysis ◽

Pump Impeller ◽

Corrosion Failure ◽

Multistage Centrifugal Pump ◽

Metallurgical Analysis ◽

Solid Liquid ◽

Centrifugal Pump Impeller

This paper carried out composition test, metallurgical analysis and water samples test of work environment for the centrifugal pump impeller material which experiences corrosion failure. Then combined with the scanning electron microscope and spectroscopy analysis of the fracture morphology, it conducted XRF analysis for the corrosion material to study the unsuccessful corrosion of MDS multistage centrifugal pump impeller in coal mine well water with alkalescence. The researches show that washout of solid - liquid composite phase leads to the serious erosion of pump impeller. The turbulence corrosion and cavitation are the main reasons which cause unsuccessful corrosion of this pump, while the organization defections such as dendritic graphite and binary phosphorus eutectic are important factors that lead to the severe local corrosion of impeller. Moreover, the corresponding prevention measures are proposed.

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Study on solid–liquid two-phase flow characteristics of centrifugal pump impeller with non-smooth surface

Advances in Mechanical Engineering ◽

10.1177/1687814019848269 ◽

2019 ◽

Vol 11 (5) ◽

pp. 168781401984826 ◽

Cited By ~ 1

Author(s):

Yunqing Gu ◽

Nuojia Liu ◽

Jiegang Mou ◽

Peijian Zhou ◽

Heng Qian ◽

...

Keyword(s):

Centrifugal Pump ◽

Smooth Surface ◽

Two Phase Flow ◽

Flow Characteristics ◽

Phase Flow ◽

Two Phase ◽

Pump Impeller ◽

Solid Liquid ◽

Centrifugal Pump Impeller

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On the Flow Condition at the Blade Inlet of a Centrifugal Pump Impeller : Studies of Cavitation Aspect and Suction Performance of Centrifugal Pumps, 1st Report

Transactions of the Japan Society of Mechanical Engineers ◽

10.1299/kikai1938.29.853 ◽

1963 ◽

Vol 29 (201) ◽

pp. 853-859

Author(s):

Taijiro KASAI ◽

Yasuo TAKAMATU

Keyword(s):

Centrifugal Pump ◽

Flow Condition ◽

Centrifugal Pumps ◽

Pump Impeller ◽

Suction Performance ◽

Centrifugal Pump Impeller

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Prediction of Sheet Cavitation in a Centrifugal Pump Impeller With the Three-Dimensional Potential-Flow Model

Volume 1: Symposia, Parts A and B ◽

10.1115/fedsm2005-77240 ◽

2005 ◽

Cited By ~ 1

Author(s):

R. J. H. Dijkers ◽

B. Fumex ◽

J. G. H. Op de Woerd ◽

N. P. Kruyt ◽

H. W. M. Hoeijmakers

Keyword(s):

Centrifugal Pump ◽

Potential Flow ◽

Three Dimensional ◽

Inviscid Flow ◽

Limiting Factors ◽

Centrifugal Pumps ◽

Pump Impeller ◽

Flow Equations ◽

Sheet Cavitation ◽

Centrifugal Pump Impeller

The occurrence of cavitation is one of the main limiting factors in the operation and design of centrifugal pumps. In this paper a model for the prediction of sheet cavitation is described. This model has been implemented in a three-dimensional finite-element package, employing the potential-flow approximation of the governing flow equations. At the interface between vapor and liquid, pressure equilibrium is required. The closure region of the cavity is modeled as the collapse of a bubble, whose motion is described by the Rayleigh-Plesset equation. The effect of displacement of the flow due to presence of the sheet cavity is incorporated by the transpiration technique. This is a linearised approach which is well-known from techniques for coupling inviscid-flow methods to boundary-layer methods. The model gives the location of the sheet cavity (if present); its length is thus also predicted. The model has been validated by comparing sheet cavitation at the blades of a centrifugal pump impeller, obtained from CFD-computations and from visual observations in a model test.

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