The importance of dispersive mixing for modelling of density-dependent and reactive transport

It is well known that dispersion is a major difficulty in the modelling of transport in groundwater, that is the physical dispersion itself as well as numerical dispersion. This study addresses the topic of how important the process of dispersive mixing could be especially for coupled problems like density-dependent flow and reactive transport. This is based on evaluating the physical process of dispersive mixing in laboratory visualisation experiments, and using this data to assess the behaviour of specific codes and the underlying conceptual model.