Based on the Fluent Euler two-fluid model and in accordance with the characteristics of wind and sand along the line,the protective effects of single-row high vertical sand barriers and double-row high vertical sand barriers on Jiangjunmiao—Naomaohu Railway were simulated,and the distribution characteristics of flow field and sand accumu-lation under different working conditions were analyzed.The result shows that,the airflow will be divided around the sand barrier.The deceleration zone is formed at the windward side of the sand barrier,the turbulence zone is formed above the sand barrier,and the vortex low-speed zone is formed on the leeward side.Under the protection of single-row sand barrier,when the wind speed is low,it presents a'W'shape distribution with the change of horizontal position,and after the wind speed increases,it delivers a'V'shape distribution.The wind speed reduction range and influence height of sand barrier increase with the magnification of inlet wind speed.The double-row high vertical sand barrier has better sand blocking effect.
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