Effect of particle motion on the hydraulic collection of coarse spherical particles

Chen, Yuxiang; Xiong, Hong; Cheng, Hui; Yu, Chunliang; Xie, Jiahua

doi:10.1007/s10409-019-00922-6

Cited by 36 publications

(4 citation statements)

References 11 publications

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“…Figure 11 shows the vortex structure around the particles at different times of the suction process. In Figure 11b, we can observe that the wake flow before the particle entering the pipe is obvious, which agrees with the results of Chen's analysis [37], in that the wake is the reason that the vertical force of the particles oscillates around the mean value in Figure 7. Figure 11 shows the vortex structure around the particles at different times of the suction process.…”

Section: Flow Field Characteristic Analysissupporting

confidence: 87%

“…In situ deep-sea mining, with long cycle and high cost, is difficult to implement. For laboratory research, most scholars [25,37,38] adopt PIV method to capture images in the process of particle acquisition. Chen et al [10,37] performed an experimental testing in a pool with a volume of 1 × 1.5 × 2 m 3 .…”

Section: Introductionmentioning

confidence: 99%

“…For laboratory research, most scholars [25,37,38] adopt PIV method to capture images in the process of particle acquisition. Chen et al [10,37] performed an experimental testing in a pool with a volume of 1 × 1.5 × 2 m 3 . The pressure sensor was connected at the bottom of the pool, and the motion of particles was captured by PIV equipment.…”

Section: Introductionmentioning

confidence: 99%

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Study on Flow Characteristics of Hydraulic Suction of Seabed Ore Particles

et al. 2023

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Efficient and environmentally friendly ore collecting operation requires that the ore collecting head can provide just enough suction to start the ore particles in different working conditions. In this work, computational fluid dynamics and discrete element method (CFD-DEM) is used to simulate the hydraulic suction process of ore particles. After analyzing the pressure and velocity characteristics of the flow field, the effects of different suction velocities on the lateral displacement offset, drag coefficient Cd and Reynolds number Rep of particles are studied. It is determined that the lifting force is caused by the different flow velocities of the upper and lower flow fields; particle start-up time and the lateral offset are inversely proportional to suction speed. When h/d ≥ 2.25, the vertical force on particles is no longer affected by h/d. When S/d = 2.5, FZ decreases to 0 N; when h/d increases from 1.5 to 1.75, FZ decreases by nearly half. Three empirical equations for FZ represented by D/d, h/d, and S/d are obtained. After integrating the above three equations, the functional relationship of FZ with D/d, h/d and S/d is finally obtained within a certain range. The errors of the equations are within 6%. The particle stress characteristics obtained in this paper can be applied to the establishment of ore collecting performance prediction model and provide data support for the research and development of intelligent ore collecting equipment.

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Section: Flow Field Characteristic Analysissupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study on Flow Characteristics of Hydraulic Suction of Seabed Ore Particles

et al. 2023

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“…The wake and vortex of particles gradually evolved with the movement of particles, and because the separation point of the wake vortex of particles was near the top of the sphere, the vertical force exhibited oscillatory characteristics near the mean value. Chen et al [63] experimentally studied the motion characteristics of a thick ball with a radius of 2 cm under the suction action of a vertical pipe and found that the ball rose in a spiral trajectory, and the tangential motion of the ball was conducive to hydraulic collection. The flow field information is calculated using the CFD-DEM method, and it is concluded that the vortex around the sphere and its coupling with the main stream are the main reasons for the extra lift exerted on the sphere.…”

Section: Research Of Low Disturbance Of Sediment Simulation and Exper...mentioning

confidence: 99%

Research Status of Deep-Sea Polymetallic Nodule Collection Technology

Liu,

Wang,

Zhang

et al. 2024

JMSE

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The bottom of the ocean is rich in mineral resources, and deep-sea mining has been a research hotspot in recent years. As a key part of deep-sea mining operation, polymetallic nodule collection technology has been researched in many countries around the world. The distribution of deep-sea polymetallic nodule mining areas and the characteristics of nodules are summarized, which provides a reference for the study of collection technology and the optimization of pick-up device structure. In order to further establish a deep-sea mining collection technology system, the current development status of polymetallic nodule mechanical, mechanical–hydraulic composite and hydraulic collection technologies are summarized, and the analysis shows that hydraulic collection technology has a more promising commercialization prospect. For the hydraulic collection technology, the research progress of suck-up-based collection technology, Coandă-effect-based collection technology, double-row hydraulic collection sluicing technology and other collection technologies are summarized from three aspects: collecting principle, device structure parameter optimization, and sea trial situation, and the key technical problems of hydraulic ore collection are put forward. Through the comparative analysis of the pick-up efficiency, energy consumption, environmental disturbance and other performances of different devices, it is found that the Coandă-effect-based hydraulic collection technology has better comprehensive performance. A structural design evaluation indicator for the collection head of hydraulic collection technology is proposed, and the prospect of further research on hydraulic collection technology is put forward.

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Experimental investigation of critical suction velocity of coarse solid particles in hydraulic collecting

Zhang

et al. 2021

Acta Mech. Sin.

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Effect of particle motion on the hydraulic collection of coarse spherical particles

Cited by 36 publications

References 11 publications

Study on Flow Characteristics of Hydraulic Suction of Seabed Ore Particles

Study on Flow Characteristics of Hydraulic Suction of Seabed Ore Particles

Research Status of Deep-Sea Polymetallic Nodule Collection Technology

Experimental investigation of critical suction velocity of coarse solid particles in hydraulic collecting

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