Advection Dispersion Modelling: Difference between revisions
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These limitations mean that while the AD module can be used in models with 1D elements, it does not fully capture the complexities of non-Newtonian fluid behaviour in those elements. If higher accuracy is required, 2D elements where non-Newtonian properties are more comprehensively represented may be considered.
== Can the Advection Dispersion module be used in a fixed grid TUFLOW HPC or SGS model to simulate salinity? ==
Yes, the Advection Dispersion (AD) module can be used with fixed grid TUFLOW HPC and SGS models to simulate salinity transport, as long as the system is relatively well mixed vertically.
TUFLOW HPC is a 2D shallow water equation solver, so it does not account for vertical salinity gradients. This means it is best suited for rivers, shallow lakes, and estuaries where haloclines are weak or absent. Different boundary inflows can be assigned varying time series of salinity concentrations, and the module will simulate how these mix over space and time.
If the system has strong density stratification or distinctly three dimensional flow behaviour, a fully 3D solver such as TUFLOW FV is recommended.
== Can TUFLOW HPC simulate pollutant runoff and transport from catchments? ==
Yes, TUFLOW HPC’s Advection Dispersion module can also be used to simulate pollutant runoff from catchments. This includes modelling the generation, transport, and fate of pollutants such as suspended sediment, nitrogen, and phosphorus.
Pollutants can be generated based on modelled bed shear stress, then transported through the domain using the flow field. The model can also apply decay and settling rates as part of the simulation.
For more complex water quality modelling needs, contact TUFLOW Support (support@tuflow.com) for guidance on best practices.<br>
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