Advection Dispersion Modelling: Difference between revisions

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The Advection Dispersion module in TUFLOW can simplify firewater containment modelling by using passive tracers to track firewater flow and concentration. Instead of running separate simulations for rainfall and firewater scenarios, the AD module enables a single simulation where tracers represent the firewater. This approach reduces modelling complexity while maintaining accuracy.
 
For example, a model with direct rainfall over the entire domain applies a passive tracer via 2d source area (2d_sa) polygons. The output identifiescan be set up to identify areas with tracer concentrations above 1%a certain threshold, distinguishing firewater extents from other inundated areas. GreyAreas areasoutside of this represent zones with zero tracer concentration. Tracers can also include decay and settling parameters for added flexibility. This method not only simplifies the process but also ensures compliance with CIRIA (Construction Industry Research and Information Association) guidance by integrating rainfall and firewater scenarios into a single simulation.
 
== What guidance is available for Non-Newtonian Mixing Exponents and Dispersion Coefficients in the TUFLOW Advection Dispersion Module? ==