Application Of 1D Shallow Flow Model For Simulation Of Pollution Fate And Streamflow

Lariyah Mohd Sidek, N. A. Alias

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Abstract

Numerical models especially twodimensional
(2D) models have long been used in
simulating hydrodynamics and its associated processes such as sediment transport,
pollutant dispersion, and flooding are caused by overtopping or breaching of river banks.
However, due to the complexity of the river geometries, it is still difficult to resolve the
problematic river in a 2D manner. Thus, a onedimensional
(1D) component model is
needed to analyze complex flow hydrodynamics under flood conditions. As solute
transport also greatly impacts the local environment and is closely related to the water
quality in shallow water bodies, the prediction of pollutant fate is also included in this
paper. Thus, this paper focuses on developing a numerical model to simulate shallow
flow hydrodynamics in the context of irregular profiled open channels to predict depthaveraged
water level and pollutant transport. The scope of work is limited to the
development of a 1D model and verification of the model against benchmark tests and
laboratory measurements. Presented in this paper is the development of an integrated
model with fully dynamic shallow water equations (SWE’s) and the advection–diffusion
equation. Results demonstrated are the comparisons between the numerical results and
data obtained through experimental procedures or from published analytical solutions
in terms of flow depth and solute concentration. Closed agreement is achieved for all
tests, and the model was therefore applied in Sungai Penchala, Malaysia.
Original languageEnglish
Pages251-263
Number of pages12
DOIs
Publication statusAccepted/In press - 01 Apr 2016

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

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