TUNA-WQ simulation of suspended sediments transport

Abstract

Abstract. Increasing demand for potable water coupled with diminishing water resources due to pollution and unsustainable utilization create a challenge in providing sustainable sources of potable water. It is therefore vital to protect our existing water resources from pollution while achieving economic and social development. Water quality models are useful tools for simulation of pollution levels, due to pollutants released into a certain water body. Mitigation measures for reducing the adverse environmental impact can be explored via model simulations. These model-predicted impacts and suggested mitigation measures provide a basis for environmental management agencies to make the right decisions. In this paper, we present an in-house two-dimensional water quality simulation model codenamed TUNA-WQ. As an in-house model, TUNA-WQ can be revised and adapted to broaden the applicability and improve the robustness of the model. Further, proprietary models are costly to maintain for individuals without access to institutional support. We begin the paper by introducing the development of TUNA-WQ, starting from specifying the equations and numerical method employed. This is followed by verification of the model through comparison with a tested water quality simulation model. To demonstrate the application of TUNA-WQ, we conclude the paper by presenting the TUNA-WQ simulated suspended sediment plumes in the top water column due to discharge from an offshore oil and gas exploration platform in the South China Sea.

Load-balanced parallel architectures for 2-D water quality model PARATUNA-WQ on OpenMP

“…Such mathematical model simulations lead to the spatialtemporal distributions of selected key water quality parameters to permit optimal choice of management options. We have earlier developed a serial water quality simulation model code-named TUNA-WQ to simulate the hydrodynamics and pollutant transport in offshore, coastal and estuarine systems based upon serial architectures (Chong et al, 2016). The main code TUNA is designed to simulate the twodimensional vertically integrated hydrodynamic flows subject to tidal influence, initial and boundary conditions.…”