3-D Numerical Study of the Effect of Impeller Blades Slot on the Centrifugal Pump Performance Using CFD

Ayad, A. Farid; Abdalla, H. M.; El-Azm, A. S. Abo

doi:10.21608/amme.2014.35605

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…They are defined by means of the multi-reference frame technique. The impeller is situated in the rotating reference frame, the inlet side gab and outlet zones are in the fixed reference frame, and they are related to each other through the ''frozen rotor'' interface [7], except the interface between the inlet and side gab is selected to be general connection.…”

Section: Computational Domainmentioning

confidence: 99%

Numerical Study of the Semi-Open Centrifugal Pump Impeller Side Clearance

Ayad¹,

Abdalla²,

El-Azm³

2015

International Conference on Aerospace Sciences and Aviation Tec

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The effect of impeller side clearance (the gap between the impeller face and the casing) on the centrifugal pump performance has been investigated numerically through monitoring the change of the pump head and efficiency at different flowrate. 3-D numerical simulation has been carried out using commercial software, ANSYS® CFX. The numerical simulation has been compared with experimental results to verify the numerical solution. In addition, the results have been compared with the closed impeller with front shroud at the same operating conditions It has been shown that the impeller side clearance have a great regression effect on the centrifugal pump performance. This regression on performance could be attributed to the drop in the pressure difference between the impeller inlet and outlet. And the secondary flow across the blade tip which impedes the core flow.

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Section: Computational Domainmentioning

confidence: 99%

Numerical Study of the Semi-Open Centrifugal Pump Impeller Side Clearance

Ayad¹,

Abdalla²,

El-Azm³

2015

International Conference on Aerospace Sciences and Aviation Tec

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“…Centrifugal fans have been extensively used in a wide range of engineering applications, including the automobile industry to cool internal combustion engines; central heating and cooling systems in buildings; cupola fans; blast furnace gas fans; water gas fans; municipal gas plant fans; coke plant exhausters; agricultural works; and aeroplane superchargers [1][2][3]. It is one of the power-consuming turbo machines, requiring large volumes of gas or air at low pressures.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on the influence of flow passages in centrifugal fan using computational fluid dynamics

et al. 2023

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In this work, three actual impeller geometries of identical size, with backward, radial, and forward flow passages in the same volute casing, are experimentally analysed and numerically simulated to understand the flow physics characteristics and the performance mapping under different flowrate conditions. A grid independence test is carried out for the whole computational domain to capture complex flow behaviour inside blades. The three-dimensional numerical analysis is performed under steady flow conditions, and for a rotational domain, a moving reference frame approach (frozen rotor method) is used. The results obtained from experimental and simulated cases for backward, radial, and forward curved centrifugal fans with varying mass flowrates shows that static pressure and total pressure are increased with an increase in rotation speed and the static pressure gradient is higher in forward curved blades than in backward and radial bladed centrifugal fans. A blade's low and high-pressure regions along the suction and pressure sides are visualised by numerical analysis. The degree of recirculation within blade passages, flow reversal and vortex formation in volute and tongue regions is observed to be different in all three types of flow passages, which clearly describes its influence on the performance characteristics of centrifugal fans.

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“…The numerical simulation results gave good agreement with the results of experimental. (Ayad et al, 2014), studied the influence of the impeller backward blades with slot onto a performing of centrifugal pump numerically. Impeller blades have been modified with different geometric parameters of slot such as: slot radial position (Rs), slot height (hs) and slot inclination angle (Ө).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation the Effect of Grooves Impeller on Rotating Stall of High Speed Blower

Kassim¹,

Saleh²,

Aliwi³

2018

IJCET

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Experimental and numerical investigation to study the influence of add (one groove and two grooves) to the unshroud impeller onto the rotating stall as well fluctuations of pressure at a high speed blower of centrifugal. Experimental test rig which includes blower of centrifugal, transducer of pressure as well measurement instrumentations are constructed and designed for this study. A data acquisition system (hardware) as well its (software) have been developed into transferring the signal than transducer of pressure to the computer. The experimental work has been implemented through measuring the variation of static pressure as well fluctuation of pressure for two cases of the impeller (with one groove and with two grooves). Static pressure has been taken in different points arranged onto the frontal-wall of a volute casing along one track for two cases of the impeller. This track is angular track about the impeller. The results of experimental show that the fluctuations of pressure for different mass flow rates are nature of non-periodical and the mass flow rates decrease with the fluctuations of pressure increase. Also, the results indicate that the impeller with two grooves show high mass flow rates comparison with the impeller with one groove. Simulation of numerical has been implemented onto blower of centrifugal to analysis both field of flow as well fluctuations of pressure through using ANSYS (FLUENT 15). The simulation of numerical has been carried out through solve the continuity as well momentum equations with the moving reference framework technicality inside a blower. The numerical simulation results show good agreement with the results of experimental.

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3-D Numerical Study of the Effect of Impeller Blades Slot on the Centrifugal Pump Performance Using CFD

Cited by 4 publications

References 14 publications

Numerical Study of the Semi-Open Centrifugal Pump Impeller Side Clearance

Numerical Study of the Semi-Open Centrifugal Pump Impeller Side Clearance

Experimental and numerical study on the influence of flow passages in centrifugal fan using computational fluid dynamics

Experimental and Numerical Investigation the Effect of Grooves Impeller on Rotating Stall of High Speed Blower

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