Application of 1D–2D coupled modeling in water quality assessment: A case study in Ca Mau Peninsula, Vietnam

Tri, Doan Quang; Linh, Nguyen Thi Mai; Thai, Tran Hong; Kandasamy, Jaya

doi:10.1016/j.pce.2018.10.004

Cited by 17 publications

(12 citation statements)

References 24 publications

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“…The flow module was created by the finite element mesh technique. The computing domains are divided into continually non-overlapping grid cells [10].…”

Section: B Hydrodynamic Model (Hd)mentioning

confidence: 99%

Optimization of Channel Outlet in the Coastal Area — Application to Da Nang Bay, Viet Nam

Nguyen¹,

Gourbesville²,

Audra³

et al. 2022

IJESD

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The water quality of Da Nang Bay (Viet Nam) is one of the major issues on Da Nang City's coast. The discharge of the Phu Loc (PL) channel will be inserted through the outlet into Da Nang Bay. However, the PL channel receives many sources of wastewater so the highly polluted channel water. Therefore, the outlet of PL channel has become the environmental hotspot of the Da Nang Sea. Mike 21 FM Hydrodynamics module coupled with a water quality model using Mike 21 FM ECOLab module is used to simulate water quality and to identify the spreading of NH4+, which is used as a pollutant tracer. Currently, the outlet of PL channel generates the polluted area along the coast in different directions depending on the current and the direction of the wind. This study proposes three scenarios of designing the outlet far from the coastline 400 m, 500 m, and 600 m, respectively. The finding of this research demonstrates that the best way to discharge the wastewater from PL channel would be the outlet to be moved 500 m away from the coastline. NH4+ concentration > 0.2 mg/l will cover an area that distributes about 100 m around the coastline. NH4+ concentration > 0.5 mg/l covers an area approximately 0.03 km2.

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“…The flow module was created by the finite element mesh technique. The computing domains are divided into continually non-overlapping grid cells [10].…”

Section: B Hydrodynamic Model (Hd)mentioning

confidence: 99%

Optimization of Channel Outlet in the Coastal Area — Application to Da Nang Bay, Viet Nam

Nguyen¹,

Gourbesville²,

Audra³

et al. 2022

IJESD

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“…Various mathematical water quality models have been developed and applied by some researchers to study the quality of water in many countries, for example, in Poland (Stolarska & Skrzypski, 2012), the USA in the Shenandoah River watershed (Mbongowo et al, 2019), and Florida Bay (Carl et al, 2000), and South Korea in Ara artificial canal (Zhenhao & Dongil, 2013). Water quality models have been applied for water quality assessment in various waterbodies, onedimensional (1D) and two-dimensional (2D) coupled hydrodynamic and water quality models were used in the Ca Mau Peninsula (Tri et al, 2018), development of surface water model (Q. Wang et al, 2013;Kayode & Muthukrishna, 2018), mathematical models have been applied for reservoirs (Stolarska & Skrzypski, 2012), the Rio Chone estuary (Stram et al, 2005), the East Johor and Singapore Straits (Sundarambal & Pavel, 2014) and Kas bay (Kagan & Lale, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…One of the purposes of a water quality study is to determine its suitability for the intended use. For water quality modeling, the primary and secondary water level and water quality data have been used (Tri et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Overview of water quality modeling

Ejigu

2021

Cogent Engineering

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Due to population growth, urbanization, and industrialization, water demands have increased, and the quality of water is degraded. Water quality modeling is a significant tool that aids managers and policymakers in multiscale integrated water resources and environmental management. However, water quality modeling is challenging due to several constraints. The modern application of modeling is essentially utilized by the need to comply with rules and regulations. In view of this, water quality modeling requires the standardization of models, identification of common features of models, the hotspots of pollution, and the current state of policy-relevant models. This review presents an overview of water quality modeling and major models frequently applied for water quality assessment at the catchment and at waterbody scales. This review is intended to highlight the applicability of certain water quality models, and the state of water quality modeling, model classification, and uncertainties. Water quality models are described and selected based on their applicability, strengths, weaknesses, and intended use. Some models are applicable for the specific waterbodies, simulate selected water quality parameters, have uncertainties, are not commercially available, require skilled model users, and have huge data requirements. When selecting suitable models, it is recommended to consider the availability of data, model complexity, and type of waterbody, and intended objectives to be modeled.

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“…The majority of studies in this field focused on assessing the bottom water level and bedmud level changes, and turbidity of spreading and dissipating to pollution water quality within several hours after dredging [15][16][17]. They used numerical 2D and 3D models to simulate the sediment transport and evaluate the impact of dredging and dumping activities on the marine environment near the port [18][19][20][21]. In Vietnam, not many studies have assessed the dumping and dredged materials at the port areas [10].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Waves and Tidal Currents on the Sediment Transport at the Sea Port

2021

Self Cite

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Dredged sediments in estuarine and coastal waters can cause sediment transport and water pollutant in marine environment since the sediments are diffused to waterbodies under the influence of wave and flow regimes. As a result, it increases turbidity and enhances sediment deposition at dump sites. In Vietnam, few authors have studied and assessed the environmental impact of dumping and dredged materials to the port areas. This paper combines a coupled spectral wind-wave, hydrodynamic, and sediment transport models in order to study the impact of tide and wave conditions to regional sediment transport patterns at Vung Ang port area in Vietnam. The results for the currents and waves were evaluated and validated using field data. Wind and wave data for the calculated domain are extracted from the WAVEWATCH-III (wave data) and NOAA global climate change models (wind data). The calibration and validation of the MIKE 21/3 showed a high conformity between the observed and simulated data based on the mean absolute error (MAE), the RMSE-observation standard deviation ratio (RSR) and the Percent bias (PBIAS). The MIKE 21/3 sediment transport simulation results showed that the highest suspended sediment concentrations were 2.5-3 g/m3 at the dredging position and the increased concentration along the transport route ranged from 1-1.5 g/m3. The simulation results showed the bed level change of the simulated domain. We found that the suspended sediment diffusion area decreased with the respective depth: Layer 1 (65.5 km2), Layer 2 (45.7 km2), and Layer 3 (37.4 km2). Therefore, the simulation results of the dredged materials activities were significantly affected by the wave and tidal regime on the sediment transport. Doi: 10.28991/cej-2021-03091749 Full Text: PDF

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Application of 1D–2D coupled modeling in water quality assessment: A case study in Ca Mau Peninsula, Vietnam

Cited by 17 publications

References 24 publications

Optimization of Channel Outlet in the Coastal Area — Application to Da Nang Bay, Viet Nam

Optimization of Channel Outlet in the Coastal Area — Application to Da Nang Bay, Viet Nam

Overview of water quality modeling

The Impact of Waves and Tidal Currents on the Sediment Transport at the Sea Port

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