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Contaminant Transport in Marine Sediment. Sediments in bays and estuaries are often contaminated. The inorganic contaminants in sediments can be released back into the water body through mass transfer processes. The mass transfer rate is largely controlled by the wave-driven seepage flux across the seabed. Quantification of this flux is thus a key factor in modelling water quality of coastal water bodies. This project aims to: (1) develop models forwave-induced seepage flux within sediments and ....Contaminant Transport in Marine Sediment. Sediments in bays and estuaries are often contaminated. The inorganic contaminants in sediments can be released back into the water body through mass transfer processes. The mass transfer rate is largely controlled by the wave-driven seepage flux across the seabed. Quantification of this flux is thus a key factor in modelling water quality of coastal water bodies. This project aims to: (1) develop models forwave-induced seepage flux within sediments and contaminant transport; and (2) establish the link between seepage flux and contaminant transport. Outcomes of the proposed research will enhance the understanding of the mechanism of contaminant transport in marine sediment.Read moreRead less
Modelling of sand wave migration and its interaction with pipelines. The movement of sand due to sand waves can interfere with marine structures such as pipelines and cables on the seabed. It may also cause free spans of pipelines, with potentially serious consequences. Most previous research has considered sand wave propagation and the stability of pipelines as separate problems. In this project, we propose a coupled analysis of sand wave migration and its interaction with pipelines through mat ....Modelling of sand wave migration and its interaction with pipelines. The movement of sand due to sand waves can interfere with marine structures such as pipelines and cables on the seabed. It may also cause free spans of pipelines, with potentially serious consequences. Most previous research has considered sand wave propagation and the stability of pipelines as separate problems. In this project, we propose a coupled analysis of sand wave migration and its interaction with pipelines through mathematical and numerical modelling. The theoretical work will be supported by laboratory experiments. The resulting research will provide a better understanding of sand wave migration, beach profiles and the stability of pipelines.Read moreRead less
Tidal watertable fluctuation in a sandy ocean beach. Tidal dynamics in a sandy beach is important for erosion, saltwater intrusion and biological activities. Most previous researches were based on linearised shallow flow, ignoring capillary effects and soil behaviour, which are particularly important for a sandy beach. In this project, we propose to establish an analytical approximation for the tidal watertable fluctuation in a sandy beach by incorporate the capillary effects and soil behaviour. ....Tidal watertable fluctuation in a sandy ocean beach. Tidal dynamics in a sandy beach is important for erosion, saltwater intrusion and biological activities. Most previous researches were based on linearised shallow flow, ignoring capillary effects and soil behaviour, which are particularly important for a sandy beach. In this project, we propose to establish an analytical approximation for the tidal watertable fluctuation in a sandy beach by incorporate the capillary effects and soil behaviour. The analytical work will be supported by numerical and laboratory experiments. The research outcomes will provide a better understanding in tidal waves, beaches and groundwater interaction and also establish a long-term collaboration between two institutes.Read moreRead less