Numerical simulation of scouring funnel in front of bottom orifice

Xue, Wanyun; Huai, Wenxin; Li, Zhiwei; Chen, Qiuwen; Zhou, Qian; Yang, Zhonghua

doi:10.1016/s1001-6058(11)60386-8

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…The dual-nozzle numerical simulation model is shown in Figure 5. The three-dimensional model simulates the soil-breaking of the hydraulic jet in still water, including the nozzle, cement interface and bottom mud [25,26]. During the simulation, some parameters, such as standoff distance, flow rate, jet angle and nozzle spacing, are adjusted according to the change in the study object [27].…”

Section: Finite Element Methodsmentioning

confidence: 99%

Research on Improving the Working Efficiency of Hydraulic Jet Submarine Cable Laying Machine

Cao

et al. 2021

JMSE

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The anchoring and hooking of ships, bedrock friction and biological corrosion threaten the safety and stability of submarine cables. A hydraulic jet submarine cable laying machine manages to bury the submarine cables deep into the seabed, and effectively reduces the occurrence of external damage to the submarine cables. This machine uses a hydraulic jet system to realize trenching on the seabed. However, the hydraulic jet submarine cable laying machine has complicated operation and high power consumption with high requirements on the mother ship, and it is not yet the mainstream trenching method. In this paper, a mathematical model for the hydraulic jet nozzle of the submarine cable laying machine is established, and parameters that affect the trenching efficiency are studied. The effects of jet target distance, flow, angle and nozzle spacing on the working efficiency of the burying machine are analyzed by setting up a double-nozzle model. The results of the theory, numerical simulation and experiment show that the operational efficiency of the hydraulic jet submarine cable laying machine can be distinctly improved by setting proper jet conditions and parameters.

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Section: Finite Element Methodsmentioning

confidence: 99%

Research on Improving the Working Efficiency of Hydraulic Jet Submarine Cable Laying Machine

Cao

et al. 2021

JMSE

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“…Sediment flushing is typically induced by opening the sluice gate of bottom tunnels, with associated water level drawdown and regressive erosion in the reservoir, followed by jetting of highly concentrated water-sediment mixtures through bottom tunnels [13]. Over recent decades, numerous studies including laboratory-scale experiments [15][16][17][18][19] and numerical modelling [20][21][22][23][24] have focused on improving the efficiency of sediment flushing operations.…”

Section: Introductionmentioning

confidence: 99%