  The engineering interest about dune fields is dictated by the their
interaction with a number of human infrastructures in arid environments. Sand
dunes dynamics is dictated by wind and its ability to induce sand erosion,
transport and deposition. A deep understanding of dune aerodynamics serves then
to ground effective strategies for the protection of human infrastructures from
sand, the so-called sand mitigation. Because of their simple geometry and their
frequent occurrence in desert area, transverse sand dunes are usually adopted
in literature as a benchmark to investigate dune aerodynamics by means of both
computational or experimental approaches, usually in nominally 2D setups. The
present study aims at evaluating 3D flow features in the wake of a idealised
transverse dune, if any, under different nominally 2D setup conditions by means
of computational simulations and to compare the obtained results with
experimental measurements available in literature.
