Aeolian particle transport involves uplift from the ground, dispersion and deposition back to the surface. Integrated effects of these processes, in general, are of great importance for a wide range of reasons mostly because of their unwanted deposition on the railway tracks, environmental impact, degradation of air quality and risks to human health. In sandy dry lands Aeolian sand accumulation on railway tracks is a major problem, since it directly affects safety of railway transportation, apart from decreasing the speed in railway transportation. The most common methods for preventing sand deposition on railway tracks like, building galleries (Gallery is a short length tunnel-shape cover which is built and installed over the railway track to avoid sand deposition. It is commonly applied in regions which are more probable of sand storm.), fences or increasing plant varieties around railway are restricted to special situations and not as effective. Efficient prevention of sand deposition is a great challenge that requires a comprehensive knowledge of wind-sand flow behavior. In the present study, an efficient 2D and 3D CFD model for simulation of two-phase gas-particle problems, as the sandy air flow, is developed. Conventional methods for preventing sand deposition on the railway track as well as an innovative method for avoiding sand deposition are presented and their effectiveness is evaluated by the proposed CFD model. It has been shown both by the CFD model and the accomplished empirical works that galleries cannot prevent sand deposition effectively. Instead, the innovative proposed method is proved to reduce sand deposition near the embankment, along with decreasing sand content of flowing wind.

风沙颗粒的运输包括从地面隆起，分散和沉积回到地面。通常，由于多种原因，这些过程的综合效果非常重要，这主要是由于它们在铁轨上的有害沉积，环境影响，空气质量下降以及对人类健康的危害。在沙质干旱土地上，风沙在铁路轨道上的堆积是一个主要问题，因为它不仅会影响铁路运输的速度，而且会直接影响铁路运输的安全性。防止沙粒沉积在铁路道廊上的最常见方法，例如建筑廊道（廊道是一种短长度的隧道形盖，它被安装并安装在铁道轨道上以避免沙粒沉积。它通常用于可能发生沙漏的区域）。沙尘暴。），铁路周围的栅栏或植物种类不断增加仅限于特殊情况，效果不佳。有效地防止沙粒沉积是一个巨大的挑战，需要全面了解风沙的流动行为。在本研究中，开发了一种高效的2D和3D CFD模型，用于模拟两相气体颗粒问题（如沙质气流）。提出了防止铁路沙尘的常规方法以及避免沙尘沉积的创新方法，并通过提出的CFD模型评估了其有效性。CFD模型和已完成的经验工作都表明，画廊无法有效防止沙粒沉积。取而代之的是，创新的建议方法被证明可以减少路堤附近的沙粒沉积，