An experiment system for testing synergetic erosion caused by sand abrasion and cavitation

Li, Lu; Liu, J; Zhang, J G; Zhu, Ling; Xu, H Q; Meng, Xiaochao; Yu, Junwei; P, Siva Prakash; Wang, K

doi:10.1088/1755-1315/22/5/052017

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…In addition to the synergy effects of cavitation and sediment erosion experiments using simple geometry models, experiments have also been conducted on proto pumps and turbines (Zhou et al, 2013;Lu et al, 2014;Wang et al, 2014;Zhao et al, 2017;Liu et al, 2019), and even the field experiments have been conducted in hydroelectric power and pump stations (Yang et al, 2005;Lu et al, 2019). Specifically, Takagi et al, (1978) experimentally studied the influence of alumina concentration on the performance and cavitation characteristics of turbines.…”

Section: Water Tunnelmentioning

confidence: 99%

“…Their study showed that the combined effects of cavitation and sediment erosion were stronger than the individual effects. Using the hydraulic machinery erosion testing system at the China Institute of Water Resources and Hydropower Research (CIWRH), China, which has three test modes including venturi-section water tunnel, rotating disc and rotating disc with jet nozzle (Lu et al, 2014;Liu et al, 2019;Hydraulic Machinery, 2021), as shown in Figures 7, 8, Lu et al, (2014) experimentally studied the synergetic erosion caused by cavitation and sand erosion in hydraulic machinery. A high-precision electronic analytical balance (maximum capacity: 220 g, readability: 0.1 mg) was used to measure the weight loss, and a 3D surface profiler was used to image the erode surface as well as the volume loss.…”

Section: Water Tunnelmentioning

confidence: 99%

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A review on synergy of cavitation and sediment erosion in hydraulic machinery

Wang

Tan²,

Chen³

et al. 2022

Front. Energy Res.

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The synergy of cavitation and sediment erosion is the most severe destruction in hydraulic machinery in sediment-laden rivers, and currently the physics and mechanism are still lack of understanding. The synergy effects of cavitation and sediment erosion not only reduce the efficiency and life of hydraulic machinery but also cause costs in operation and maintenance. With the rapid development of renewable clean energy and the transformation of water resources, an increasing number of new hydropower stations and water diversion projects are currently planned or under construction, where most of them are in sediment-laden rivers. In the present paper, the research work, including theory, experiment, and simulation, in this field carried out by various investigators are presented and discussed. Physical mechanisms involved in the synergy of cavitation and sediment erosion which is responsible for material damage as investigated by researchers have also been discussed, and would help to identify gaps for future studies.

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Section: Water Tunnelmentioning

confidence: 99%

Section: Water Tunnelmentioning

confidence: 99%

A review on synergy of cavitation and sediment erosion in hydraulic machinery

Wang

Tan²,

Chen³

et al. 2022

Front. Energy Res.

View full text Add to dashboard Cite

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Review on experimental investigation of sediment erosion in hydraulic turbines

Shrestha,

Gurung,

Chitrakar

et al. 2024

Front. Mech. Eng.

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Sediment erosion in turbine materials is caused by various flow phenomena. The study of these phenomena can identify suitable measures to minimize their effect on the turbine. Various experimental test rigs have been developed alongside numerical analysis to study erosion and predict wear. In hydraulic turbines, erosion in Francis turbines is mostly seen at the guide vanes and runners, and in Pelton turbines, the needle and the bucket regions are the most vulnerable components. Prediction of wear due to erosion in various parts of the turbine is difficult, as wear depends on the properties of flow, base material, and sediment. Past studies have shown that the test rigs developed to investigate erosion have considered reducing the number of independent parameters to simplify the experiment. Erosion rates and wear patterns are predicted through both quantitative and qualitative methods. This article aims to conduct a systematic review of experimental setups and the results of those studies. This work is expected to be useful in understanding the vulnerable areas of erosion in hydraulic turbines and different mathematical relationships developed to quantify erosion, as well as to know the contemporary understanding in the sector of experimental investigation of sediment erosion.

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An experiment system for testing synergetic erosion caused by sand abrasion and cavitation

Cited by 2 publications

References 3 publications

A review on synergy of cavitation and sediment erosion in hydraulic machinery

A review on synergy of cavitation and sediment erosion in hydraulic machinery

Review on experimental investigation of sediment erosion in hydraulic turbines

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