Three-dimensional Reverse Modeling and Hydraulic Analysis of the Intake Structure of Pumping Stations on Sediment-laden Rivers

Xu, Cundong; Tian, Junjiao; Liu, Zijin; Wang, Rongrong; Wang, Guoxia

doi:10.1007/s11269-022-03385-w

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…The construction of an infrastructure should not dampened the functionality of other infrastructures. Practically, excessive sediment that is entering the river tends to cause problems to water intake structures [28,29]. Saltation and sedimentation in the river might cause river shallowing and floodplain enlargements, which may cause damages to the riparian ecosystem and riverside infrastructures [30,31].…”

Section: Discussionmentioning

confidence: 99%

Overview of watershed development and river sedimentation condition in Sorong, Papua, Indonesia

Putra,

Usman,

Pramudawati

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Sorong Regency is developed to be a special economic zone, for enhancing economic in the eastern part of Indonesia. Few studies or investigations, which are related to river sedimentation due to the development, are rarely available. In September 2023, we conducted field investigation to four watersheds in Sorong (Remu, Mariat, Klasaman, and Warsamson Watersheds), in which each of them has different services. The normal flow at the upstream of Remu River was not visually turbid, and the watershed was well conserved for drink water purposes. The Mariat River was visually turbid as the watershed was developed for transmigration and agriculture area, which is likely related to siltation at the downstream segment of the river and sedimentation in the irrigation facilities. The sand mining and washing activities in the Klasaman Watershed are likely related to the difference of visual turbidity of the upstream and downstream river flows relative to the mining site. We think that the erosion protection of manmade slopes are needed to reduce the amount of sediment entering the Warsamson River. Erosion and sedimentation monitoring efforts are crucial and urgent toward sustainable water resources development in Sorong, Papua, Indonesia.

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Section: Discussionmentioning

confidence: 99%

Overview of watershed development and river sedimentation condition in Sorong, Papua, Indonesia

Putra,

Usman,

Pramudawati

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

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“…Reverse modeling involves the use of certain measurement techniques to measure existing physical objects or models and obtain a series of discrete data point values that can characterize their geometric topology information; then, based on the measured discrete data, with the help of certain three-dimensional geometric model construction methods and software, the process of reconstructing the CAD model of the physical object can commence. For the detailed process of reverse modeling, please refer to the Reference [21].…”

Section: Acquisition and Processing Of Point Cloud Datamentioning

confidence: 99%

“…Dan Zi et al [13] analyzed the correlation between sediment concentration and flow velocity through numerical simulation and established a quadratic polynomial model of sediment deposition efficiency and flow velocity. Cundong Xu et al [21] reconstructed the 3D geometric model of the intake structure using reverse engineering techniques, which can more realistically restore the structural dimensions and siltation morphology of the research object and reduce the distortions of numerical simulations using design dimensions. Haidong Wang et al [2] explored the mechanism of vortices and sediment deposition in the forebay of the pumping station through numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Water–Sediment Flow Fields within the Intake Structure of Pumping Station under Different Hydraulic Conditions

Xu,

Tian,

Wang

et al. 2024

Water

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The vortices, backflow, and siltation caused by sediment-laden flow are detrimental to the safe and efficient operation of pumping stations. To explore the effects of water–sediment two-phase flow on the velocity field, vorticity field, and sediment distribution within intake structures, field tests and numerical simulations were conducted in this study with consideration for the sediment concentration, flow rate, and start-up combination. We applied a non-contact laser scanner and ultrasonic Doppler velocimetry to obtain the field data and reverse modeling of the three-dimensional model of the intake structure under siltation. A multiphase flow model based on the Euler–Euler approach combined with the k-ε turbulence model was adopted for numerical simulation under 10 working conditions, and the reliability was verified with field data. The results indicate that sediment promotes the evolution of coaxial vortices into larger-scale spiral vortices along the water depth, and the process of sediment deposition is controlled by the range, intensity, and flow velocity of the backflow zone. Furthermore, the maximum volume fraction of the near-bottom sediment increased by 202.01% compared to the initial state. The increase in flow rate exacerbates the turbulence of the flow field. Although the increase in sediment concentration benefits the flow diffusion, it further promotes sediment deposition. This study provides a new idea for modeling complex surfaces and considers different operating conditions. It can serve as a scientific reference for the structural optimization and anti-siltation design of similar water-conservancy projects.

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“…The Realizable k-ε turbulence model is applicable to problems such as uniform vorticity shear flow, free flow, curved streamline flow, and boundary layer flow. Its governing equations include the continuity equation, momentum equation, turbulent kinetic energy equation, and dissipation rate transport equation [24] . Continuity equation ( )…”

Section: Realizable K-ε Turbulence Modelmentioning

confidence: 99%

Study on the Combined Vortex Characteristics of Cavity Vortex in the Sediment Transport Pipe of the Desilting Channel with a Swirling Flow Generator

Nan,

Hu,

et al. 2024

Preprint

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To clarify the internal flow field characteristics of cavity vortex in the sediment transport pipe (STP) of the desilting channel with a swirling flow generator (DCSFG), this study adopted a method combining model test, numerical simulation, and theoretical analysis to investigate flow field characteristics such as water flow regime, cavity morphology, pressure, flow velocity and vorticity, analyze the distribution of combined vortex indexes and radial pressure difference of cavity vortex, and discuss the motion feature differences between the combined vortex in the cavity vortex and the ideal combined vortex. The results show that large eddy simulation (LES) exhibits higher accuracy than the Realizable k–ε model, the distribution of combined vortex n values along typical cross-sections inside the STP ranges from − 0.901 to 0.913 radially, indicating quasi-forced vortex motion on the inner side of the vortex area and quasi-free vortex motion on the outer side, the theoretical values of radial pressure difference align well with the simulation results, with a maximum relative error of 15%, confirming that the flow characteristics of the vortex are in accordance with the motion features of combined vortex, the distribution of radial pressure, tangential velocity, and vorticity in the cavity vortex conform to the distribution pattern of ideal combined vortex, whereas significant differences exist in terms of fluid force conditions, structural composition, and generation mechanism. The research findings may provide reference for further analyzing the sediment transport mechanism in the cavity vortex and for the practical engineering design and application of the DCSFG.

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Three-dimensional Reverse Modeling and Hydraulic Analysis of the Intake Structure of Pumping Stations on Sediment-laden Rivers

Cited by 4 publications

References 23 publications

Overview of watershed development and river sedimentation condition in Sorong, Papua, Indonesia

Overview of watershed development and river sedimentation condition in Sorong, Papua, Indonesia

Numerical Analysis of Water–Sediment Flow Fields within the Intake Structure of Pumping Station under Different Hydraulic Conditions

Study on the Combined Vortex Characteristics of Cavity Vortex in the Sediment Transport Pipe of the Desilting Channel with a Swirling Flow Generator

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