A review and some future research directions - From Best (2005)

Quote from Best (2005): Five areas are then highlighted and discussed as a possible focus for future research:

1. the influence of dune leeside angle upon flow processes in the dune wake and downstream flow field, 
2. the influence of three-dimensionality in dune shape upon the generation of turbulence and distribution of bed shear stress,
3. flow field modification resulting from bed form superimposition and amalgamation, 
4. the scale and topology of dune-related turbulence and its interactions with sediment transport and the flow surface, and
5.  the influence of suspended sediment on the dune flow field and dune morphology.