Water quality models combine fluid-flow relations with biological regressions, all on a spatially complex domain. For many applications, a computationally simple lumped parameter model with regressed parameters suffices, while for others where a more fundamental approach may be worth the extra development and computational effort. A simple example modelling the transport of salt in interconnected basins is used to illustrate and compare different modelling approaches. KEY WORDS water quality modelling, size complexity, PDE, FEM
Magnus Dahl, David I. Wilson