A Study on Suction Performance of a Centrifugal Pump with an Inducer

Oshima, Masao

doi:10.1299/jsme1958.10.959

Cited by 8 publications

(1 citation statement)

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“…JF Zhang et al 10 introduced high-pressure liquid at the suction connection to reduce the strength of the backflow vortex, but this will adversely affect the flow field of the pump. Oshima and Toyokura 11,12 installed an orifice plate before the inlet of the inducer to weaken the backflow. The effect of orifice was verified in improving the cavitation performance of a centrifugal pump and head of the shut-off condition of the pump.…”

Section: Introductionmentioning

confidence: 99%

Analysis and control of flow at suction connection in high-speed centrifugal pump

Song

Wei

et al. 2017

Advances in Mechanical Engineering

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The backflow vortexes at the suction connection in high-speed centrifugal pumps have negative effect on the flow field. Setting an orifice plate in front of the inducer is able to decrease the negative effect caused by backflow vortexes. The traditional plate is able to partially control the backflow vortexes, but a small part of the vortex is still in the inlet and the inducer. Four new types of orifice plates were created, and the control effects on backflow vortexes were analyzed. The ANSYS-CFX software was used to numerically simulate a high-speed centrifugal pump. The variations of streamline and velocity vectors at the suction connection were analyzed. Meanwhile, the effects of these plates on the impeller pressure and the internal flow field of the inducer were analyzed. Numerically, simulation and experimental data analysis methods were used to compare the head and efficiency of the high-speed pumps. The results show that the C-type orifice plate can improve the backflow vortex, reduce the low-pressure area, and improve the hydraulic performance of the high-speed pump.

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Section: Introductionmentioning

confidence: 99%

Analysis and control of flow at suction connection in high-speed centrifugal pump

Song

Wei

et al. 2017

Advances in Mechanical Engineering

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Maximizing the performance of pump inducers using CFD-based multi-objective optimization

Parikh

Mansour

Thévenin

2021

Struct Multidisc Optim

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Pump inducers are usually employed within a limited flow rate range since the performance is known to drop out significantly far from their design point. Therefore, finding an optimal geometry that ensures efficient operation for a relatively wide range of flow rates is challenging. The present study tackles this problem using multi-objective optimization to identify optimal inducer configurations, delivering high performance for a wide flow range. 3D RANS single-phase turbulent simulations were performed using the $$k-\omega$$ k - ω turbulence model. The optimization was done by employing the Non-dominated Sorting Genetic Algorithm (NSGA-II) coupled with computational fluid dynamics (CFD). An established in-house flow optimization library (OPAL++) was used to automatically control the numerical simulations. The objective is to optimize the inducer geometrical parameters to simultaneously maximize the efficiency and pressure head curves, considering different flow rates, i.e., 80% (part-load), 100% (nominal), and 150% (overload) of the optimal flow rate for the considered pump. The optimization involves 8 most relevant design parameters, i.e., the axial blade length, blade sweep angle, blade pitch, hub taper angle, tip clearance gap, blade thickness at the hub, blade thickness at the tip, and the number of blades. A total of 5178 simulations over 37 generations have been needed to get a Pareto front containing 5 optimal configurations. This article discusses quantitatively the influence of each geometrical parameter on flow behavior and inducer performance. The results reveal in general that blade length, blade sweep angle, tip clearance gap, and blade thickness should be kept low for the considered application; inducers with high hub taper angles and 3 blades lead to optimal performance.

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Investigations on the performance of centrifugal pumps in conjunction with inducers

Ghorab

Mostafa

2014

Ain Shams Engineering Journal

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A Study on Suction Performance of a Centrifugal Pump with an Inducer

Cited by 8 publications

References 0 publications

Analysis and control of flow at suction connection in high-speed centrifugal pump

Analysis and control of flow at suction connection in high-speed centrifugal pump

Maximizing the performance of pump inducers using CFD-based multi-objective optimization

Investigations on the performance of centrifugal pumps in conjunction with inducers

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