Wind-sand tunnel testing of surface-mounted obstacles: Similarity requirements and a case study on a Sand Mitigation Measure

摘要: Abstract Windblown sand flow interacts with a number of surface-mounted human-built obstacles. The wind-sand perturbation and resulting morphodynamic response the bed cannot be assessed in analytical terms. Therefore, tunnel studies around scale physical models are often carried out. They should driven by similarity theory based on dimensionless numbers referred to whole multiphase multiscale flow. However, requirements fully satisfied under typical testing conditions attention paid extent relaxation. In this study, background obstacles is recalled reviewing wind setups requirements. Then, campaign Sand Mitigation Measure described critically discussed. setup compared statistics those past studies. inescapable relaxation motivated test goals. time evolution towards in-equilibrium both morphodynamics transport Finally, results engineering interest described: trapping performance terms through measurements incoming outgoing concentration air.