Parametric Study of a Centrifugal Pump Impeller by Varying the Outlet Blade Angle

Bacharoudis, E.C.; Filios, Andronikos; Mentzos,; Margaris, Dionissios P.

doi:10.2174/1874155x00802010075

Cited by 80 publications

(42 citation statements)

References 28 publications

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“…As a turbulence model, the realizable k-€ model is used with non-equilibrium wall functions [6], [7], [8]. The inlet velocity and the flow direction normal to the boundary are imposed at the inlet [10].…”

Section: Computational Modeling By Using Cfdmentioning

confidence: 99%

Numerical Investigation of Short Blades Effect on the Performance of a Centrifugal Pump

El-Shaikh¹

2017

IJMEA

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Improvement performance of centrifugal pumps is critical to reduce the consumption of electrical energy. One to improve the performance is to break down the circulation near the impeller exit. This can be achieved through the use of shorted blades. Effect of different sizes of shorted blade on pump performance is studied theoretically in this research which, test rig for testing centrifugal pump with standard impeller is constructed. Three impeller configurations with different size shorted blade are installed. The head, flow rate and shaft power are measured at 1500 rotational speed for the standard pump only. Also computational model using "Fluent" under ANSYS is constructed to predict the performance parameters of centrifugal pumps and to analyze the flow field in the impellers' passages. Standard impeller (A) and three impellers configuration with different shorted blade length of 0.25 (configuration B), 0.2 (configuration C), and 0.15 (configuration D) of the full blade length are analyzed. Computational results show a reduction in flow circulation for all shorted blades impeller comparing to standard impeller. Also static pressure distributions at impeller exit become more uniform for impeller with 0.25, 0.2, and 0.15 shorted blades. The present work proves that the length of short blades have different effects for all pump cases. The best performance in this study occurred when shorted blades have length 25% from the original blade length. So when the effect of shorted blades is needed to study, each case of centrifugal pump should be investigated separately.

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Section: Computational Modeling By Using Cfdmentioning

confidence: 99%

Numerical Investigation of Short Blades Effect on the Performance of a Centrifugal Pump

El-Shaikh¹

2017

IJMEA

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“…Bacharoudis et al 2) tested the performance of a pump with impeller blade exit angles of 20 , 30 , and 50 . However, the inducer, diffuser, and volute casing also have many variables that affect performance, besides the impeller.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Small-scale Liquid Pump using a Radial Turbine with H<sub>2</sub>O<sub>2</sub> Gas Generator

Park

Heo

Cho

et al. 2015

Trans. Japan Soc. Aero. S Sci.

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A gas-turbine-driven pump system was designed and tested. Pump systems are generally driven by an electric motor, but a gas turbine is occasionally used as the power source for high power and performance; for example, the turbopump of a liquid rocket propulsion system. For research on turbopumps, a gas generator, turbine, and pump are developed. After each component is developed, the performance should be confirmed with a link test. In the case of a turbopump, an axial turbine is applied to generate huge torque, but a radial inflow turbine was used in this research. A radial inflow turbine can be obtained easily and mass-produced. System analysis was conducted using a link test with all components at once. The turbine generated shaft power under steady operation of the gas generator, and the pump performance was measured using a stepped closing valve at the pump exit. Turbine heat loss was considered and a slip factor was applied to the impeller design to modify performance. This research shows the feasibility of developing a pump system operated by a radial inflow turbine and its application to a small turbopump for a hybrid rocket propulsion system and an air-independent system.

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“…Mentzos and D.P. Margaris [4] have contributed to reveal the flow mechanisms inside centrifugal impellers and studied performance by varying outlet blade angle. They observed a gain in head more than 7 % with increase in outlet blade angle from 20 o to 45 o .…”

Section: Introductionmentioning

confidence: 99%

CFD Simulation of Centrifugal Pump Impeller Using ANSYS-CFX

Muttalli¹,

Agrawal²,

Warudkar³

2014

IJIRSET

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Centrifugal pumps are a most commonly used in different fields like industries, agriculture and domestic applications. Computational Fluid Dynamics is most commonly used tool for simulation and analysis. 3-D numerical CFD tool is used for simulation of the flow field characteristics inside the turbo machinery. CFD simulation makes it possible to visualize the flow condition inside centrifugal pump. The present paper describes the head, power, efficiency and to evaluate the pump performance using the ANSYS CFX-14, a computational fluid dynamics simulation tool. These simulations of centrifugal pumps are strongly related to cavitation flow phenomena, which may occur in either the rotating runner-impeller or the stationary parts of the centrifugal pumps. The numerical simulation can be used to detect the cavitation in centrifugal pump and to get safe range of operating at different flow rate and rotating speed.

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Parametric Study of a Centrifugal Pump Impeller by Varying the Outlet Blade Angle

Cited by 80 publications

References 28 publications

Numerical Investigation of Short Blades Effect on the Performance of a Centrifugal Pump

Numerical Investigation of Short Blades Effect on the Performance of a Centrifugal Pump

Performance Evaluation of Small-scale Liquid Pump using a Radial Turbine with H<sub>2</sub>O<sub>2</sub> Gas Generator

CFD Simulation of Centrifugal Pump Impeller Using ANSYS-CFX

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