Author(s): Alamsyah Kurniawan; Albert Goedbloed; Gerard Pijcke; Wang Xuan; Zhang Jingjie; Chakravarthy
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Keywords: Numerical model; Closed water system; Water quality; Singapore reservoirs
Abstract: Damming of Punggol and Serangoon Reservoirs, together with the development of Marina Reservoir, has increased Singapore water bearing reservoir catchment area from half to two thirds of Singapore’s land surface. Rain water collected from roads, pavements, roof tops and other surfaces is channeled to the reservoirs from respective catchments through a comprehensive network of drains, canals and storm water collection ponds. These reservoirs also receive pollutants flushed from large urbanized catchment area. To develop a waterfront town and improve the recreation facilities in Punggol, the Punggol Waterway has been developed by connecting the two reservoirs. With main objective to provide drinking water supply, a monitoring framework is needed to meet the water quality regulations. In this context, a study is being carried out to predict water quality in Punggol and Serangoon Reservoirs and Waterway system (PSR& W) .Present study focuses on work carried out for validation of hydrodynamic models in terms of representation of temperature. Application of hydraulic-3D hydrodynamic coupling, heat flux model and turbulence closure model is applied to capture a weakly-dynamic system of the reservoirs. Spatial and temporal distributions comparisons between simulated and observed results suggest that the output of 3D hydrodynamic can be used as inputs for subsequent water quality modelling.
Year: 2015