Three-dimensional modeling of hydrodynamic processes in the St. Lucie Estuary

Ji, Zhen‐Gang; Hu, Gordon; Shen, Jian; Wan, Yongshan

doi:10.1016/j.ecss.2006.12.016

Cited by 95 publications

(56 citation statements)

References 22 publications

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“…The details of the EFDC model were documented by Hamrick [19] and Craig [22]. The model has been extensively applied to simulate circulation, thermal stratification, sediment transport, water quality, and eutrophication processes in numerous lakes, rivers, and estuaries [23,24].…”

Section: Hydrodynamic Model Of Ctrmentioning

confidence: 99%

Water Age Responses to Weather Conditions in a Hyper-Eutrophic Channel Reservoir in Southern China

Liu

et al. 2016

Water

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Abstract:Channel reservoirs have the characteristics of both rivers and lakes, in which hydrodynamic conditions and the factors affecting the eutrophication process are complex and highly affected by weather conditions. Water age at any location in the reservoir is used as an indicator for describing the spatial and temporal variations of water exchange and nutrient transport. The hyper-eutrophic Changtan Reservoir (CTR) in Southern China was investigated. Three weather conditions including wet, normal, and dry years were considered for assessing the response of water age by using the coupled watershed model Soil Water Assessment Tool (SWAT) and the three-dimensional hydrodynamic model Environmental Fluid Hydrodynamic Code (EFDC). The results showed that the water age in CTR varied tremendously under different weather conditions. The averaged water ages at the downstream of CTR were 3 d, 60 d, and 110 d, respectively in the three typical wet, normal, and dry years. The highest water ages at the main tributary were >70 d, >100 d, and >200 d, respectively. The spatial distribution of water ages in the tributaries and the reservoir were mainly affected by precipitation. This paper provides useful information on water exchange and transport pathways in channel reservoir, which will be helpful in understanding nutrient dynamics for controlling algal blooms.

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Section: Hydrodynamic Model Of Ctrmentioning

confidence: 99%

Water Age Responses to Weather Conditions in a Hyper-Eutrophic Channel Reservoir in Southern China

Liu

et al. 2016

Water

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“…The EFDC is one of the most widely used three-dimensional models for the simulation of flow, sediment transport, and biochemical processes in water systems. As public domain software, the model application has been reported in more than 100 water bodies all over the world, including rivers, reservoirs, lakes, estuaries, wetland and coastal seas [21,26,[31][32][33][34][35].…”

Section: Model Descriptionmentioning

confidence: 99%

Assessment of Water Quality Improvements Using the Hydrodynamic Simulation Approach in Regulated Cascade Reservoirs: A Case Study of Drinking Water Sources of Shenzhen, China

Hua

Zhang

2017

Water

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Water quality safety is of critical importance in environmental improvement, particularly with respect to drinking water resources worldwide. As the main drinking water sources in Shenzhen, China, the cascade reservoirs comprising the Shiyan, Tiegang, and Xili Reservoirs are highly regulated and have experienced water quality deterioration in recent years. In this study, a three-dimensional hydrodynamic and water quality model was established using the Environmental Fluid Dynamics Code (EFDC) for the cascade reservoirs. The relationships between water quality and improvement measures were quantified and the main pollution sources for individual reservoirs were identified. Results showed that the hydrodynamic and water quality model well captured the spatial and temporal variations of water level, the permanganate concentration index (COD Mn ), and total nitrogen (TN), with high resolution in the cascade reservoirs. The correlation coefficients between simulations and observations were close to 1.00 for water levels, and over 0.50 for COD Mn and TN concentrations. The most effective methods for water quality improvement were the reduction of the runoff load for TN and transferred water load for COD Mn in the Shiyan Reservoir, reduction of the transferred water load in the Tiegang Reservoir, and an increase in transfer water volume, especially in the flood season, in the Xili Reservoir. Internal pollution sources also played an important role in water pollution, and thus sedimentation should be cleaned up regularly. This study is expected to provide scientific support for drinking water source protection and promote the application of hydrodynamic model in water quality management.

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“…Kolluru et al, 2003, Hamrick and Mills, 2000, and Marcos et al, 1997, thermal stratification in lakes and estuaries (e.g. Ji et al, 2007 andKopmann andMarkofsky, 2000), and sediment transport (e.g. Chao et al, 2008, Bai et al, 2003, and Falconer and Lin, 1997.…”

Section: Introductionmentioning

confidence: 99%

A Three-Dimensional Hydro-Environmental Model of Dublin Bay

Bedri

Bruen

Dowley

et al. 2011

Environ Model Assess

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Publication informationEnvironmental Modeling and Assessment, 16 (4): 369-384Publisher Springer AbstractThis paper compares a 3-dimensional hydro-ecological model with a 2-dimensional model simulating the distribution and fate of Escherichia Coli (E.Coli) discharges from a sewage treatment plant discharging into Dublin Bay, Ireland. Before being discharged, the effluent from the sewage treatment plant is mixed with cooling water from a thermal generation plant resulting in a warm buoyant sewage plume that can be 7 − 9 o C higher than the ambient water in the Bay. The mixing of the stratified plume is complicated by the tidal currents which transport the plume into and out of the estuary. These processes have a direct impact on the transport and fate of E.Coli and the model comparison demonstrates that a three-dimensional model is required to adequately represent the mixing processes in such a stratified environment.The modelling followed a two-step procedure. First, hydrodynamic simulations of water levels and flow velocities in Dublin Bay were performed using the three-dimensional model TELEMAC-3D. The resulting water level and flow velocity fields were used by the three-dimensional water quality model, SUBIEF-3D to model the transport and fate of E.Coli in the Bay.Further simulations were performed in which the wind effects on the E.Coli dispersion were included. The water quality simulation was repeated using the 2-dimensional, depth-averaged, hydrodynamic model TELEMAC-2D to compare with the threedimensional simulations. The results showed that the three-dimensional model gives an adequate representation of the hydrodynamics and water quality in the Bay while the two-dimensional, depth-averaged, water quality model (in comparison to the threedimensional model) delays the timing of the delivery of E.Coli to the Bay and seriously underestimats the decay rate of E.Coli and the effect of wind on the movement of the buoyant plume of pollution.

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Three-dimensional modeling of hydrodynamic processes in the St. Lucie Estuary

Cited by 95 publications

References 22 publications

Water Age Responses to Weather Conditions in a Hyper-Eutrophic Channel Reservoir in Southern China

Water Age Responses to Weather Conditions in a Hyper-Eutrophic Channel Reservoir in Southern China

Assessment of Water Quality Improvements Using the Hydrodynamic Simulation Approach in Regulated Cascade Reservoirs: A Case Study of Drinking Water Sources of Shenzhen, China

A Three-Dimensional Hydro-Environmental Model of Dublin Bay

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