Experiment and simulation research on abrasive water jet nozzle wear behavior and anti-wear structural improvement

Chen, Xiaochen; Deng, Shunjie; Guan, Jinfa; Hua, Weixing

doi:10.1007/s40430-017-0707-y

Cited by 20 publications

(10 citation statements)

References 31 publications

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“…In the meantime, there are some scholars who researched the relevant problems about it and got some valuable achievements. Currently, it has been widely used in many different fields, such as grouting, mining, drilling, pipe cleaning and municipal engineering, and it has achieved the remarkable social and economic benefits for many years [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. For the practical applications of water jet technology, jet grouting is a kind of construction technology which gathers the technologies of the water jet and the conventional static-pressure grouting, and it has been widely used for geotechnical engineering, geohazard prevention and controlling and environmental rehabilitation, etc.…”

Section: Introductionmentioning

confidence: 99%

Research on the structures and hydraulic performances of the typical direct jet nozzles for water jet technology

Wen

Behbahani

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Water jet technology has been widely used for many years. It is an effective and clean approach for breaking, cutting or cleaning materials. Nozzle is the crucial component for implementing the water jet technology in practice. The structural parameters of nozzle directly determine its hydraulic performance. In the meantime, the nozzle's hydraulic performance directly determines the operational efficiency of water jet technology. The straight cone nozzle and the conical nozzle are two kinds of typical direct jet nozzles, which have been widely used in the practice. Comprehensively using the orthogonal experimental design, CFD numerical simulation, theoretical calculation, experiments of testing the water jets' impact forces and breaking the artificial sandstones, the optimal structural parameters of straight cone nozzle can be obtained. Moreover, the impact force of water jet produced by the straight cone nozzle increases with its outlet diameter increasing significantly. In addition, the cylindrical outlet section of straight cone nozzle is good for improving its hydraulic performance, resulting that its hydraulic performance is better than the conical nozzle.

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Section: Introductionmentioning

confidence: 99%

Research on the structures and hydraulic performances of the typical direct jet nozzles for water jet technology

Wen

Behbahani

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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“…High-pressure water jet technology (H-PWJT) is a clean and effective approach to clean and cut minerals and/or break mine ores. H-PWJT has been widely utilized resulting in remarkable social and economic benefits in several engineering and technical disciplines and may be combined with other technologies to develop new ones [5][6][7][8][9][10][11][12]. For example, the hydraulic coal mining and static pressure grouting technologies are combined to develop the highpressure jet grouting technology, which can be widely used in engineering fields such as rock and soil reinforcement and anti-seepage [13].…”

Section: Introductionmentioning

confidence: 99%

“…Nozzle is a fundamental component in the implementation of H-PWJT. The exploration of nozzle with good hydraulic performance is a key precondition for the smooth and efficient implementation of H-PWJT and other related technologies as the ones mentioned above [5][6][7][8][9][10][11][12][13][14][15][16]. This study proposes a combination of EB and nozzle's structural design.…”

Section: Introductionmentioning

confidence: 99%

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Bionic optimum design of straight cone nozzle and the effectiveness evaluation of reducing fluid resistance

Wen

Chen

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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High-pressure water jet technology is a clean and effective approach to break, cut or clean solid materials. The nozzle's hydraulic performance determines the efficiency and quality of the high-pressure water jet technology implementation. The fluid resistance reduction technology of bionic non-smooth surface is applied to the structural design of the straight cone nozzle successfully. The circular groove is selected as the bionic unit. The selection results in the investigation and development of a bionic straight cone nozzle with the optimum hydraulic performance. Moreover, the separated nozzle machining method is successfully implemented. A comprehensive approach that implements the orthogonal experiment, high-pressure water jets' impact forces testing and range analysis results in the optimization of the bionic straight cone nozzle's structure. The optimal structural parameters of the nozzle as follows: the outlet diameter is 4 mm, length-to-diameter ratio is 2.5, contraction angle is 60°, the circular groove width is 3 mm, the circular groove depth is 2 mm and the circular groove number is 2. In addition, the circular grooves are uniformly arranged on the surface of the straight cone nozzle's internal chamber resulting in reduction of the fluid resistance effectively. Under the same experimental conditions, the impact forces of high-pressure water jets produced by the bionic straight cone nozzles are greater in comparison with the impact forces of high-pressure water jets produced by the ordinary straight cone nozzles. The average rate of fluid resistance reduction of bionic straight cone nozzles is up to 2.33%. Furthermore, the results of CFD numerical simulation show that the circular grooves at the contraction and the outlet sections can also reduce the high-pressure water flow resistance effectively. In the meantime, the opposite rotating vortexes in the circular grooves are the main reason for the reduction in fluid resistance of the bionic straight cone nozzle.

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“…The experiments were performed on a pre-mixed AWJ cutting system, which consists of a high-pressure (HP) pump, an abrasive tank, an AWJ nozzle, and several HP hoses ( Figure 1) [21]. Below is a brief introduction to the operation process of the system.…”

Section: Introductionmentioning

confidence: 99%

Features and mechanism of abrasive water jet cutting of Q345 steel

Chen¹,

Guan²,

Deng³

et al. 2018

IJHT

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This paper attempts to disclose the cutting features and mechanism of the pre-mixed abrasive water jet (AWJ) on Q345 steel. For this purpose, several cutting experiments were performed on the pre-mixed AWJ and a Q345 steel plate. Besides, a numerical simulation model was established based on the smoothed-particle hydrodynamics (SPH) and finite-element method (FEM) and adopted to analyse the erosion features of the jet at different angles and pressures. The main conclusions are as follows: (1) There exists a pressure threshold, i.e. the jet pressure under which the abrasive erosion kinetic energy is just enough to induce material deformation. For the 80 mesh corundum abrasive particles, the pressure threshold of Q345 steel is 15~17MPa. (2) The Q345 steel suffers from deformation and failure under the high-frequency and high-speed impinging of abrasive particles. The abrasive velocity is positively correlated with the erosion ability of the abrasive particles to induce material failure. (3) The variation in the jet angle changes the vertical and horizontal jet velocities and affects the erosion process of the jet. (4) For Q345 steel, the optimal jet angle is about 80°. At this angle, the jet deflection trend towards the non-material side is minimized without undermining the jet erosion ability in the vertical direction. The research findings provide new insights into the mechanism of the AWJ cutting.

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Experiment and simulation research on abrasive water jet nozzle wear behavior and anti-wear structural improvement

Cited by 20 publications

References 31 publications

Research on the structures and hydraulic performances of the typical direct jet nozzles for water jet technology

Research on the structures and hydraulic performances of the typical direct jet nozzles for water jet technology

Bionic optimum design of straight cone nozzle and the effectiveness evaluation of reducing fluid resistance

Features and mechanism of abrasive water jet cutting of Q345 steel

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