Erosion investigations by means of a centrifugal accelerator erosion tester

Azimian, Mehdi; Bart, Hans‐Jörg

doi:10.1016/j.wear.2015.02.002

Cited by 17 publications

(5 citation statements)

References 12 publications

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“…As shown in Figure 7e, the most serious wear region in the volute is the Figure 6 illustrates the calculated distribution of wear per unit flow area h under three different flow conditions (t = 0.8 s). As the flow rate Q increases, the wear h in the pump also increases, which is consistent with the wear experiment results reported by Azimian et al [16].…”

Section: Wear Analysis Of Flow Partssupporting

confidence: 91%

“…In recent years, many investigations into the solid-liquid two-phase flow field in the centrifugal pump have been undertaken [1][2][3][4][5]. Also, researchers have conducted numerous investigations on the erosion wear of centrifugal pumps by means of different numerical and experimental methods [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. For example, Noon et al [6] simulated the erosion wear of the volute and found that the tongue and downstream of the volute are the most severe regions of wear.…”

Section: Introductionmentioning

confidence: 99%

“…They proposed that the blade leading edge wears most severely and the blade pressure side erodes faster than the suction side. Azimian et al [16] set up an erosion tester to study the slurry erosion under different flow conditions, finding an increasing trend of erosion when increasing the flow rate. Tao et al [17] designed a wear test rig to determine the abrasion of impellers, finding that the areas with more severe abrasion are located at the blade leading edge and the junction between the blade pressure side and the hub.…”

Section: Introductionmentioning

confidence: 99%

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Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Huang

Guo

et al. 2019

Processes

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By using EDEM–Fluent codes and coupling the continuous fluid medium with a solid particle discrete element, the solid–liquid two-phase flow field in a centrifugal pump was simulated under the same inlet conditions of the particle volume fraction and three flow conditions of 0.7Qd, 1.0Qd and 1.3Qd. By introducing the Archard wear model, the wear was calculated, and the wear law was obtained for the pump flow parts such as the leading edge of the impeller blade, blade tip, blade pressure side, blade suction side, impeller shroud, hub and volute. The results demonstrate that the wear of volute is about 70% of the total wear of pump. The wear in the impeller mainly occurs in the blade leading edge, the junction of the hub and the trailing part of the blade pressure side, and the junction of the shroud and the rear part of the blade suction side. Under lower flow conditions, the wear in the impeller shroud is relatively considerable. As the flow rate increases, the wear in the blade pressure side and the hub increases significantly.

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Section: Wear Analysis Of Flow Partssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Huang

Guo

et al. 2019

Processes

View full text Add to dashboard Cite

show abstract

“…It happens due to lack of understanding of particular erosion conditions in the pump as well as samples microstructure. Azimian et al [ 7 ] designed a centrifugal erosion tester to examine the particle motion. They have quantified the hydro abrasion of materials caused by the slurry flow.…”

Section: Significance Of Slurry Erosion and Cavitationmentioning

confidence: 99%

Strive to Reduce Slurry Erosion and Cavitation in Pumps through Flow Modifications, Design Optimization and Some Other Techniques: Long Term Impact on Process Industry

et al. 2021

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Centrifugal pumps are being widely used in various industries for moving fluids that carry solids through pipelines where the need of head and flow rate is not high. Slurry erosion and cavitation are an extremely complex and not yet fully understood phenomenon that occur in centrifugal pumps; however, these undesirable phenomena can be reduced to a certain extent. Appropriate design and development of experiments is required to reasonably predict slurry erosion and cavitation. However, CFD methodology complements analytical solutions and experiments whenever testing of equipment has limitations. The current paper highlights the various slurry erosion and cavitation reduction techniques utilized by different researchers. Economic analysis conducted for a case study relevant to centrifugal pump (CP) usage in Pakistan shows that an 8% enhancement in pump efficiency can reduce the life cycle cost to about 17.6%, which could save up to USD 4281 for a single pump annually in Pakistan.

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“…Bozzini et al (2003) simulated the particle's motion trajectory and collision velocity in the pipeline and deduced the erosion model parameters based on the experiment. Azimian et al (Azimian and Bart, 2015) conducted experiments on the centrifugal rotary wear equipment and found that the size of erosion pits increases with the increase in sediment concentration. Walker et al (Walker and Bodkin, 2000) summarized the influence of solid particle size, solid-liquid two-phase fluid concentration, and the rotation speed of the pump on wear and explained the wear rule.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Particle Diameter, Mass Concentration, and Impeller Material on the Wear Performance of Solid–Liquid Two-Phase Centrifugal Pump Blade

Wang

et al. 2022

Front. Energy Res.

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A centrifugal pump is an important solid–liquid mixture conveying machinery, which is widely used in mineral mining, water conservancy engineering, and other fields. Solid particles will wear the impeller of the centrifugal pump in the process of transportation, resulting in lower service life of the impeller, especially in the transportation of a high concentration of solid particles. Many scholars use numerical simulation to study the wear of centrifugal pumps, but few efforts have been made in the wear experiment. In this study, the effect of three factors, namely, diameter of solid particles, mass concentration of particles, and material of impellers on the wear of a solid–liquid two-phase centrifugal pump was studied by the wear experiment. The solid particles are SiO2 with irregular shapes, and the diameter ranges are 0.125–0.212 mm, 0.212–0.425 mm, and 0.425–0.710 mm. The mass concentration of solid particles is 15%, 20%, and 30%. The material of impellers is carbon structural steel (Q235), gray cast iron (HT200), and low-alloy high-strength steel (16 Mn). The amount of wear is determined by measuring the thickness of the impeller material before and after wear experiments. The wear morphology of the impeller was observed by using a digital microscope. The results showed that the wear mainly concentrated on the middle and trailing edges of the blade. Impellers of different materials suffer different wear forms, among which the impeller made of HT200 has the best erosion resistance. The increase of solid mass concentration will aggravate the wear of the impeller. The change of particle diameters also has a great influence on impeller wear.

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Erosion investigations by means of a centrifugal accelerator erosion tester

Cited by 17 publications

References 12 publications

Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Strive to Reduce Slurry Erosion and Cavitation in Pumps through Flow Modifications, Design Optimization and Some Other Techniques: Long Term Impact on Process Industry

Experimental Study on the Influence of Particle Diameter, Mass Concentration, and Impeller Material on the Wear Performance of Solid–Liquid Two-Phase Centrifugal Pump Blade

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