The influence of micro grooves on the parameters of the centrifugal pump impeller

Skrzypacz, Janusz; Bieganowski, Marcin

doi:10.1016/j.ijmecsci.2017.01.039

Cited by 37 publications

(24 citation statements)

References 1 publication

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“…One is to study the effect of a single parameter or structure on the performance of centrifugal pump. Skrzypacz and Bieganowski [5] studied the influence of micro grooves on centrifugal pump performance by numerical simulation and experiment. The results illustrated that micro-blades can make the velocity distribution in the impeller passage more uniform, which thus improves the head and efficiency of the pump.…”

Section: Introductionmentioning

confidence: 99%

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

Ding

Shen

et al. 2019

Processes

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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.

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Section: Introductionmentioning

confidence: 99%

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

Ding

Shen

et al. 2019

Processes

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“…Therefore, it is of great importance to modify the blade surface flow by applying bio-inspired grooves on mixed flow fans. Recently, grooves or other similar structures start to be introduced to pump designs [30,31]. Especially, the impeller with "bionic three-dimensional (3D) fluting" named ZAbluefin adopts the so-called "rippled blade shape", which is actually a grooved blade.…”

Section: Introductionmentioning

confidence: 99%

Development of Mixed Flow Fans with Bio-Inspired Grooves

2019

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Mixed flow fan is a kind of widely used turbomachine, which has faced problems of further performance improvement in traditional design methods in recent decades. Inspired by the microgrooves such as riblets and denticles on bird feathers and shark skins, we here propose biomimetic designs of various blades with the bio-inspired grooves, aiming at the improvement of the aeroacoustic performance. Based on a systematic study with computational fluid dynamic analyses, we found that these designs had the potential in noise suppression even with macroscopic grooves. Our best design can suppress turbulence kinetic energy by approximately 38% at the blade leading edge with aerodynamic efficiency loss of only 0.3 percentage points. This improvement is achieved by passive flow control. The vortical structures are changed in a favorable way at the leading edge due to the grooves. We believe that these biomimetic designs could provide a promising future of enhancing the performance of mixed flow fans by making grooves of ideal flow passages on the suction faces of blades in accord with the theory of pump design.

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“…Impeller is an important part of a centrifugal pump, and it is an important way to improve the efficiency of the pump system by optimizing the design of impeller. Skrzypacz et al [16] found that the micro blade makes the flow field near the wall produce better velocity distribution by studying the hydraulic characteristics of an impeller with micro-grooved blades and general impeller, which leads to an increase of the head and total efficiency of the pump system. Capurso et al [17] proposed a novel impeller, which has the same specific speed number as the conventional impeller.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Transient Characteristics of a Double Suction Centrifugal Pump System during Starting Period

Jin

Yao

et al. 2019

Energies

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The starting phase for pumps in water transportation pipelines is crucial and has significant transient characteristics which merit further study in order to evaluate the operational stability of the pumping system. This paper presents the results of a study in which the relative steady operating conditions and starting period of a large double-suction centrifugal pump were monitored in real time, including pressure fluctuations, shaft run-out and vibration at the bearing. The transient characteristics of a double-suction centrifugal pump under different operating conditions have been analyzed using fast Fourier transform (FFT) and continuous wavelet transform (CWT). Results indicate broadband frequency components within the spectrum of pressure fluctuations in the volute casing under all test conditions, and the central frequency of the broadband frequency gradually decreases as flow rate increases and approaches the blade frequency, which is the primary reason for an increase in blade-frequency amplitude. This may produce a vibration frequency that is similar to the natural frequency of a certain part of the double-suction centrifugal pump during the starting period, which causes the resonance phenomenon. The radial force is also large during the starting period, which causes eccentric wear of the seal ring at the impeller inlet.

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The influence of micro grooves on the parameters of the centrifugal pump impeller

Cited by 37 publications

References 1 publication

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

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

Development of Mixed Flow Fans with Bio-Inspired Grooves

Experimental Investigation of Transient Characteristics of a Double Suction Centrifugal Pump System during Starting Period

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