Modelling the vertical grain size sorting process in aeolian sediment transport using the discrete element method

We present a model study of the aeolian saltation process where sediment samples are studied for size selective transport processes. The discrete element method is used to simulate particles different sizes, coupled with fluid boundary layer capture driving wind forces. Sediment identical median grain size, but systematically varying distributions were simulated investigate under various shear rates which fractions transported. presented results show - well in line other research that an appropriate sample parameter quantify total rate transport. However, our this does not determine what larger standard deviation distribution smaller becomes compared at bed.