The influence of blade outlet angle on the performance of centrifugal pump with high specific speed

Ding, Hu; Li, Zikang; Xiaobin, Gong; Li, Mao-Shun

doi:10.1016/j.vacuum.2018.10.049

Cited by 54 publications

(31 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The hydraulic loss exists within a certain region in the impeller inlet, the impeller outlet, and the volute tongue, respectively. Therefore, some flow instabilities exist in the centrifugal pump, which is a coincident with the conclusion indicted in [30][31][32].…”

Section: Detailed Flow Characteristics Of the Studied Pumpsupporting

confidence: 78%

Effects of a Combination Impeller on the Flow Field and External Performance of an Aero-Fuel Centrifugal Pump

Wang

Wang³

et al. 2020

Energies

View full text Add to dashboard Cite

Aero-fuel centrifugal pumps are important power plants in aero-engines. Unlike most of the existing centrifugal pumps, a combination impeller is integrated with the pump to improve performance. First, the critical geometrical parameters of the combination impeller and volute are given. Then, the effects of the combination impeller on the flow characteristics of the impeller and volute are clarified by comparing simulation results with that of the conventional impeller, where the effectiveness of the selected numerical method is validated by an acceptable agreement between simulation and experiment. Finally, the experiment is set to test the external performance of the studied pump. A significant feature of this study is that the flow characteristics are significantly ameliorated by reducing the flow losses that emerged in the impeller inlet, impeller outlet, and volute tongue. Correspondingly, the head and efficiency of a combination impeller are higher with comparison to a conventional impeller. Consequently, it is a promising approach in ameliorating the flow field and improving external performance by applying a combination impeller to an aero-fuel centrifugal pump.

show abstract

Section: Detailed Flow Characteristics Of the Studied Pumpsupporting

confidence: 78%

Effects of a Combination Impeller on the Flow Field and External Performance of an Aero-Fuel Centrifugal Pump

Wang

Wang³

et al. 2020

Energies

View full text Add to dashboard Cite

show abstract

“…Therefore, three different blade wrap angles of 112 • , 120 • , and 128 • are selected in this study. [28]). The blade outlet widths are selected to 22 mm, 23 mm, and 24 mm.…”

Section: Factors Selectionmentioning

confidence: 99%

Performance Optimization of High Specific Speed Centrifugal Pump Based on Orthogonal Experiment Design Method

Ding

Shen

et al. 2019

Processes

View full text Add to dashboard Cite

A high specific speed centrifugal pump is used in the situation of large flow and low head. Centrifugal pump parameters need to be optimized in order to raise its head and efficiency under off-design conditions. In this study, the orthogonal experiment design method is adopted to optimize the performance of centrifugal pump basing on three parameters, namely, blade outlet width b2, blade outlet angle β2 and blade wrap angle φ. First, the three-dimensional model of the centrifugal pump is established by CFturbo and SolidWorks. Then nine different schemes are designed by using orthogonal table, and numerical simulation is carried out in CFX15.0. The final optimized combination of parameters is b2 = 24 mm, β2 = 24°, φ = 112°. Under the design condition, the head and efficiency of the optimized centrifugal pump are appropriately improved, the increments of which are 0.74 m and 0.48%, respectively. However, the efficiency considerably increases at high flow rates, with an increase of 6.9% at 1.5 Qd. The anti-cavitation performance of the optimized centrifugal pump is also better than the original pump. The results in this paper can provide references for parameter selection (b2, β2, φ) in the centrifugal pump design.

show abstract

“…In recent years, domestic and foreign scholars have studied many blade structure modification schemes to improve the performance of centrifugal pumps and reduce unstable flow. Ding et al [16] studied the influences of the blade outlet angle on internal flow, and the results show that the pressure at the tongue increases with the increase in blade outlet angle at a small flow rate, whereas the velocity gradient at the tongue increases with the outlet angle at a large flow rate. Zhang et al [17] investigated the influences of blade outlet angle on the recirculation characteristics of centrifugal pump.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cutting Angle of Blade Trailing Edge on Unsteady Flow in a Centrifugal Pump Under Off-Design Conditions

Cui

Zhang

et al. 2020

Applied Sciences

View full text Add to dashboard Cite

The parameters of blade trailing edge have an important influence on the performance of centrifugal pump and internal unstable flow. In this study, the influences of cutting angles of blade trailing edge on unstable pressure pulsation and unstable flow structure are investigated using a centrifugal pump under off-design conditions through large eddy simulation. Three typical blade trailing edges, namely, original trailing edge (OTE), 15° cutting angle of blade trailing edge (OBS15) and 30° cutting angle of blade trailing edge (OBS30), are analysed. Results show that the cutting angle of blade trailing edge has a certain effect on the performance of the centrifugal pump. Under part-load conditions, the OBS30 impeller evidently contributes to the reduction in pressure pulsation intensity. By contrast, the OBS15 impeller has opposite effect because of the increase in wake vortex intensity. The OBS30 impeller can effectively improve the unstable vortex structure caused by backflow at the centrifugal pump tongue using a new Ω method. Consequently, reduction in the unstable flow structure mainly contributes to the reduction in pressure pulsation used by the proper cutting angle of blade trailing edge.

show abstract

The influence of blade outlet angle on the performance of centrifugal pump with high specific speed

Cited by 54 publications

References 15 publications

Effects of a Combination Impeller on the Flow Field and External Performance of an Aero-Fuel Centrifugal Pump

Effects of a Combination Impeller on the Flow Field and External Performance of an Aero-Fuel Centrifugal Pump

Performance Optimization of High Specific Speed Centrifugal Pump Based on Orthogonal Experiment Design Method

Influence of Cutting Angle of Blade Trailing Edge on Unsteady Flow in a Centrifugal Pump Under Off-Design Conditions

Contact Info

Product

Resources

About