<p>The air entrainment caused by the transportation, loading and unloading of industrial bulk materials is the main cause of dust diffusion. Local exhaust is the most effective means to control the diffusion of industrial pollutants. In order to study the flow field disturbance and control effect of the exhaust hood on the entrained air.&#xa0;First, a numerical model was established for the exhaust hood to control the air entrainment caused by the particle flow falling and hitting the wall.&#xa0;Secondly, the numerical model was verified using experimental data. Finally, the control of entrained air by the exhaust hood was analysed using a coupled CFD-DEM method, with the exhaust air velocity, the exhaust hood size and the exhaust hood position as variables. The results showed that the best effect on entrained air control was achieved when the exhaust air velocity was 7.5 m/s, the exhaust hood diameter was 125 mm, and the position of the exhaust hood was flush with the secondary wall impact point of the particles flow. The relative velocity recovery coefficient is pioneered to analyze the degree of influence of the three variables on the flow field of entrained air. It was found that the exhaust hood size has the greatest influence on the entrainment air velocity distribution, followed by the exhaust wind speed, and the least impact is the position of the exhaust hood.</p> Graphical Abstract <p></p>