Abstract：Spinning of sands is an important factor in wind-blown sand casualty, so a theoretical model is suggested in this paper to mathematically describe the effect of spinning of sands on the evolution of a wind-blown sand movement, which is considered the coupling interaction among the wind flow, saltating sands, and temperature.The numerical results show that at different height the distribution probabilities of angular speed of sands is single-peaked and asymmetric in wind-blown sand movement, and when the distribution probabilities reaches the maximal value, sands are downward spinning and angular speed reaches 400 r/s.When rotational sands lift-off and will fall the ground, variation of sands angular speed sands are more obvious.Meanwhile, Magnus effect apparently influence the trajectories of saltating sands, the transport rate of sand, and so on.

Keyword：Magnus effect;wind-blown sand movement;sands angular speed;