Numerical simulation of sediment erosion by submerged jets using an Eulerian model

Hu, XiaoQing; Huai, Wenxin; Xue, Wanyun

doi:10.1007/s11431-010-4165-3

Cited by 18 publications

(9 citation statements)

References 7 publications

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“…In the CFD simulation, the inlet pressure was tested at 0.1MPa, 0.2MPa, 0.3MPa, and 0.4 MPa, and the outlet gauge pressure was 101,325 Pa. Refer to Qian et al 14 paper for relevant parameter settings.…”

Section: Cfd Simulation Calculation Modelmentioning

confidence: 99%

Experimental and Numerical Study on Jet Sand Bed Erosion

Shengqun,

Jixiang,

Xinghui

et al. 2024

Preprint

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Water jet technique is widely used in the dredging of rivers and canals, and has significant engineering value. This work develops the sediment dynamic model to build a velocity-based bed load sediment transport model. The process of low-pressure water jet river bed erosion was investigated at various water jet pressures and nozzle outlet diameters, with the Shields Parameter serving as the sediment initiation threshold. The process of developing a flow scour pit is divided into three key stages: particle triggering, quick development, and dynamic equilibrium. A transient simulation of submerged three-dimensional jet erosion was performed using a mixture model in Fluent software, with the laboratory physical model parameters as reference. The numerical simulation findings that the erosion sand pit characteristic parameters agreed with experimental data, and the particle initiation model was also confirmed. An empirical formula was established based on numerical modeling and experimental data to estimate the characteristic size of the scouring pit during jet erosion equilibrium.

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Section: Cfd Simulation Calculation Modelmentioning

confidence: 99%

Experimental and Numerical Study on Jet Sand Bed Erosion

Shengqun,

Jixiang,

Xinghui

et al. 2024

Preprint

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“…To simulate the vertical jet scouring sand bed, Huai et al [12] used CFD and put forward semi-empirical formulas for the analysis of such parameter as scouring sand pit contour (pit depth and pit width) during scouring balance. Qian et al [13] used the Eulerian model to calculate the scouring process of cohesionless sand bed under the function of two-dimensional submerged vertical jets. Moreover, he analyzed the velocity field of sand gap and examined the features of sand movement.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Seabed Erosion Produced by an Inclined Jet

Zhang¹,

Gong²,

Zhang³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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Water jets are widely used in seabed scouring and desilting applications. In the present work, dedicated tests have been conducted using a jet scour model test platform and sand beds containing grains with different sizes. The FLOW-3D simulation software has also been used to tackle the problem form a numerical point of view. The boundary conditions of the simulation have been optimized to reduce the gap between the numerical results and the outcomes of the experimental tests. Scour area calculation has been based on a RNG k-ε Turbulence model. Moreover, the FAVOR (Fractional Area Volume Obstacle Representation) technology has been selected for grid division to make the simulation results more accurate. Jet scours with inclination angles of 10-20°have been simulated. It has been found that jet scouring is greatly affected by the environmental water flow, that is, water flow can weaken the scouring capacity of the jets.

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“…Explanation of the extra entrainment by jet flow seems to be more appropriate. Local erosion due to jet flow has been studied by experiments or numerical simulations [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of scour around circular cylinder caused by jet flow and bed shear stress

Kim¹,

Lee²,

Lee³

et al. 2017

Vib. proced.

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A new scour numerical model composed of two modules is proposed here. The two modules are detailed Reynolds-average Navier-Stokes flow module and sediment transport and resultant scour module. The flow module uses horizontally regular grid at the bed but partial grid concept in the vertical direction. The sediment module operates entrainment, and deposition of suspended sediment. The entrainment of sediment is computed by a new empirical equation; the major independent variables of which are the jet flow velocity and the bed shear stress. The model is applied to a laboratory scour experiment around a circular cylinder at Kookmin University, and shows satisfactory agreement with measurements.

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Numerical simulation of sediment erosion by submerged jets using an Eulerian model

Cited by 18 publications

References 7 publications

Experimental and Numerical Study on Jet Sand Bed Erosion

Experimental and Numerical Study on Jet Sand Bed Erosion

Simulation of Seabed Erosion Produced by an Inclined Jet

Numerical modelling of scour around circular cylinder caused by jet flow and bed shear stress

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