The near-ground turbulent flow of nature air should have an important influence on the wind-sand flow, because of the vegetation and/or micro-topography. However, due to the complexity of turbulent flows, the effects of such turbulences and dust particles are still unknown. In this paper, the large eddy simulation–discrete element method was used to simulate the wind-sand flow. The results show that the response time of the wind-sand flow to turbulence is approximately 1.6 s. In addition, the response time increases rapidly as the particle size increases. The turbulence impact on the sand transport rate first increases and then decreases as the wind velocity fluctuation intensity increases. The sand transport rate is enhanced when the turbulence intensity is less than 0.25, whereas it is weakened when the turbulence intensity exceeds 0.25. Furthermore, the smaller the particle size, the more significant the effect. The effect of turbulence is mainly concentrated at 0.1–0.2 m from the ground and the turbulence increases the height of the wind-sand flow.

由于植被和/或微观地形，自然空气的近地湍流应该对风沙流产生重要影响。然而，由于湍流的复杂性，这种湍流和尘粒的影响仍然是未知的。在本文中，大涡模拟-离散元法被用来模拟风沙流。结果表明，风沙流对湍流的响应时间约为1.6 s。另外，响应时间随着粒度的增加而迅速增加。随着风速波动强度的增加，湍流对砂子输送速率的影响首先增加，然后减小。当湍流强度小于0.25时，沙的输送速率增加，而当湍流强度大于0.25时，沙的输送速率减弱。此外，粒径越小，效果越显着。湍流的影响主要集中在离地面0.1-0.2 m处，湍流增加了风沙流的高度。