Simulating Flow of An Urban River Course with Complex Cross Sections Based on the MIKE21 FM Model

Wang, Qianxun; Peng, Wenqi; Dong, Fei; Ou, Nan

doi:10.3390/w12030761

Cited by 18 publications

(12 citation statements)

References 30 publications

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“…The paper on the topic of urban rivers, i.e., [52], makes exclusive use of the physically based numerical modelling.…”

Section: Discussionmentioning

confidence: 99%

“…The Special Issue also includes a paper, i.e., [52], on the analysis of the flow in a planned urban river course with a complex cross-section, offering some general modelling rules to be followed in this context.…”

Section: Discussionmentioning

confidence: 99%

“…Wang et al [52] present the application of the software MIKE21 FM for analyzing the flow in a planned urban river course with a complex cross-section. The first part of the work concerns the verification of the rationality and feasibility of the planning scheme through a two-dimensional numerical model.…”

Section: Urban Riversmentioning

confidence: 99%

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Advances in Modeling and Management of Urban Water Networks

Campisano

Creaco

2020

Water

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This Editorial presents a representative collection of 15 papers, presented in the Special Issue on Advances in Modeling and Management of Urban Water Networks (UWNs), and frames them in the current research trends. The most analyzed systems in the Special Issue are the Water Distribution Systems (WDSs), with the following four topics explored: asset management, modelling of demand and hydraulics, energy recovery, and pipe burst identification and leakage reduction. In the first topic, the multi-objective optimization of interventions on the network is presented to find trade-off solutions between costs and efficiency. In the second topic, methodologies are presented to simulate and predict demand and to simulate network behavior in emergency scenarios. In the third topic, a methodology is presented for the multi-objective optimization of pump-as-turbine (PAT) installation sites in transmission mains. In the fourth topic, methodologies for pipe burst identification and leakage reduction are presented. As for the Urban Drainage Systems (UDSs), the two explored topics are asset management, with a system upgrade to reduce flooding, and modelling of flow and water quality, with analyses on the transition from surface to pressurized flow, impact of water use reduction on the operation of UDSs and sediment transport in pressurized pipes. The Special Issue also includes one paper dealing with the hydraulic modelling of an urban river with a complex cross-section.

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“…The paper on the topic of urban rivers, i.e., [52], makes exclusive use of the physically based numerical modelling.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Advances in Modeling and Management of Urban Water Networks

Campisano

Creaco

2020

Water

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“…MIKE21 model is a two-dimensional mathematical simulation software developed by the Danish Institute of Hydrodynamics (DHI), which is applied to numerical simulation of water flow and water environment in estuaries, bays and near-shore areas of the ocean (Wang 2019). It is one of the more advanced models internationally, whose Flow Model hydrodynamic model is based on the three-way incompressible and Reynolds-averaged Navier-Stokes equation and obeys Boussinesq assumption and hydrostatic pressure assumption, and the model takes into account the Cochrane force, eddy viscosity (Guo et al 2013;Ban & Wu 2018;Luo et al 2018;Wang et al 2020aWang et al , 2020bYang et al 2020).…”

Section: Methodsmentioning

confidence: 99%

Influence of bridge piers shapes on the flow of the lower Yellow River

Zhang

Wang

2021

Water Practice and Technology

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The shape of bridge piers across rivers is one of the significant factors that affect the backwater in the river. The study on the influence of bridge piers shapes on the flow patterns of the river is valuable to the design of the bridge and river flooding. Based on the Mike 21 Flow Model hydrodynamic model, dynamic numerical simulations were conducted to investigate the effect of different shapes of bridge piers on water flow. The result shows that rectangular, circular and elliptical piers have water blocking effect on the river. The flow patterns changed in local areas near the piers. under the same flow rate, the backwater of the rectangular pier was the largest, followed by the circular piers, and the elliptical pier was the smallest. The value of backwater volume caused by the rectangular pier was as 1.95 times as the elliptical pier. The elliptical bridge piers basically do not change the overall flow patterns of the river, and have little effect on the river regime. Provide a reference for the layout of river bridge piers.

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“…The MIKE21 FM model employs the finite volume method for the discrete solution of the study area, which is discretized into several irregular triangular meshes, and the mesh is encrypted in the local area to better reflect the complex boundary. The finite volume method ensures the conservation of water volume and momentum in the calculation area [19].…”

Section: A Two-dimensional Hydrodynamic-water Quality Model Based On ...mentioning

confidence: 99%

Study on Water Replacement Characteristics of Xinghai Lake Wetland Based on Landscape Water Quality Objectives

Niu

et al. 2023

Water

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Many issues with water quality and water ecology are caused by the Xinghai Lake’s enormous catchment, significant evaporation rates, and one additional water supply. To quantitatively study Xinghai Lake’s water displacement characteristics, a two-dimensional hydrodynamic-tracer coupling model based on MIKE21 was developed. The findings indicate that: (1) Xinghai Lake’s water replacement cycle exhibits spatial heterogeneity, with a general characteristic of fast water renewal in the southern lake area and slow renewal in the northern lake area, and the gradient change of the water replacement cycle from south to north is influenced by a variety of factors, including the lake’s flow field, flow, topography, and wind field. (2) The throughput flow has an impact on the majority of the waters in Xinghai Lake. When there is a high water flow, the lake region has a high flow velocity, rapid water transport, and a large capacity for water exchange; when there is a low water flow, the lake area has a slow flow velocity, poor water flow, and a lengthy water exchange period. (3) The flow field of Xinghai Lake is complicated, the flow velocity is low, and it is a lake system where quick water exchange and slow water exchange coexist. This flow field is influenced by the interplay of wind-generated flow and throughput flow. (4) To speed up the water body’s rejuvenation, the Xinghai Lake wetland needs more inlets and exits to introduce new water sources.

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Simulating Flow of An Urban River Course with Complex Cross Sections Based on the MIKE21 FM Model

Cited by 18 publications

References 30 publications

Advances in Modeling and Management of Urban Water Networks

Advances in Modeling and Management of Urban Water Networks

Influence of bridge piers shapes on the flow of the lower Yellow River

Study on Water Replacement Characteristics of Xinghai Lake Wetland Based on Landscape Water Quality Objectives

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