Modelling Representation Of Temperature Of The Closed System Reservoirs Using 3d Hydrodynamic Model

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Alamsyah Kurniawan, Albert Goedbloed, Gerard Pijcke, Wang Xuan, Zhang Jingjie, Chakravarthy Kalyan Mynampati, Vladan Babovic, Nguyen Manh Tuan

Wednesday 1 july 2015

8:45 - 9:00h at Asia (level 0)

Themes: (T) Hydro-environment, (ST) Ecohydraulics and ecohydrology

Parallel session: 8G. Environment - Impact

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Damming of Punggol and Serangoon Reservoirs, together with the development of the Marina Reservoir, has increased the Singapore reservoir catchment area from half to two thirds.. 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 the large urban and industrial premises in the 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 the water quality in the Punggol and Serangoon Reservoirs and Waterway system (PSR&W). Present study focuses on the work carried out for validation of the hydrodynamic models in terms of representation of temperature. Application of hydrology-3D hydrodynamic coupling, heat flux model and turbulence closure model is applied to capture a weakly-dynamic system of the reservoirs. Temporal distributions and mean differences comparisons between simulated and observed results suggest that the output of the 3D hydrodynamic can be used for the inputs of sequent water quality modelling.