On the Tidal Exchange Characteristics of Model Rectangular Harbours.

Jiang, Jx; Falconer, Ra

doi:10.1680/iicep.1983.1441

Cited by 13 publications

(5 citation statements)

References 4 publications

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“…Based on [35], the distorted physical model was intended to be designed to give a model tidal range of 12 cm and a tidal period of 20 s, with a vertical scale of 1:150 and a horizontal scale of 1:25,000, thereby filling the coastal basin at Cardiff University to a maximum. However, this situation could not be achieved in its entirety.…”

Section: Methodsmentioning

confidence: 99%

Diffuse Source Pollution Studies in a Physical Model of the Severn Estuary, UK

Osei-Twumasi¹,

Falconer²

2014

JWARP

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In recent years, there has been growing concern about the impact of diffuse source pollution on water bodies, particularly due to associated health risks. Coastal waters can receive considerable inputs of pollutants from catchments since they serve as sinks for many diffuse pollutants. Furthermore, bathing waters have in the recent past often failed to comply with the various standards set by different bathing water directives. The Severn estuary has recently attracted a lot of attention in terms of bathing water compliance due to its potential to generate a considerable amount of renewable energy for the UK. It is against this background that a physical model of the estuary has been set up in the Hydraulics Laboratory at Cardiff University, for studies to be undertaken to mimic the conditions of the prototype. A sandbox filled with non-cohesive sediments within the laboratory has been set up to investigate the behaviour of pollutants in propagating from the idealised groundwater environment into the estuarine waters. It has been demonstrated that for a semi-diurnal tidal estuary like the Severn, tides have a lesser effect on the transport of solutes than flows from the catchments. Thus the impact of pollution from diffuse sources to marine environments from catchments could be higher in less tidally dominated coastal waters than a tidal one.

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Section: Methodsmentioning

confidence: 99%

Diffuse Source Pollution Studies in a Physical Model of the Severn Estuary, UK

Osei-Twumasi¹,

Falconer²

2014

JWARP

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“…This could be partially related to the geometry of the port compartments [25]. The water movement is dependent on various factors, such as geometric factors like port shape [26], entrance geometry [27] and internal structures [28], but also non-geometric factors like tides the density of water [29]. In [29] it is stated that one or more vertical vortices (i.e.…”

Section: Spatial Distribution Of Marine Littermentioning

confidence: 99%

Vessel Routing for Sweeping of Marine Litter in a Port Area

Tol

Duinkerken

Lodewijks

et al. 2016

Theory, Methodology, Tools and Applications for Modeling and Simulation of Complex Systems

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“…and field studies and parameters for evaluating the water circulation terms, such as the exchange coefficient, flushing efficiency and water residence [8]. Previous studies [9] and [10] built laboratory models to investigate the influence of the geometry, entrance width and tidal range on the exchange and flushing characteristics of a simple-shaped harbour. They concluded that optimum tidal flushing occurred when the length to width ratio is between 0.5 and 2, and the best configuration was a square harbour.…”

Section: Introductionmentioning

confidence: 99%

Impact of Al Ain El Sokhna Port Extensions on Water Renewal

Ahmed¹

2022

ERJ. Engineering Research Journal

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Ports basins have to be designed in a way to guarantee an adequate exchange of water. Water quality is often determined not only by physical processes, but also by various biological, chemical, and ecological processes. However, flushing is generally a good indicator of the potential water quality and provides a valuable tool for evaluating and improving circulation. In the current study, a two-dimensional hydrodynamic model based on Delft3D is established to study the circulation patterns which were then used to estimate the flushing characteristics within Al Ain Sokhna port under the tide effect. The circulation patterns were simulated by depth average model for the condition of 2019 (Case1) and including two port extensions, i.e., Case 2 (after dredging the second basin) and Case 3 (considering the final extension as per the master plan). The residence time, flushing exchange coefficients and flushing uniformity have been evaluated. The diffusion parameter used in the modelling exercise was 5 m 2 /s (sensitivity of the diffusion parameter of 2 m 2 /s has been investigated and hence the flushing times become double). The flushing time (T 37 ) was 9.8 days in the base configuration of the basin (Case 1) while it is increased to 13.3 days for Case 2 and 31 days for Case 3 (final development plan of the port). Based on these results, the water renewal is not good according to standards (USACE, USEPA and PIANC). Measures to improve the flushing efficiency is required, especially at the poorly flushed basin ends in-addition to pollutants & debris-collection and removal.

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On the Tidal Exchange Characteristics of Model Rectangular Harbours.

Cited by 13 publications

References 4 publications

Diffuse Source Pollution Studies in a Physical Model of the Severn Estuary, UK

Diffuse Source Pollution Studies in a Physical Model of the Severn Estuary, UK

Vessel Routing for Sweeping of Marine Litter in a Port Area

Impact of Al Ain El Sokhna Port Extensions on Water Renewal

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