Numerical Simulation of Spray Angle in the Process of Atomization Process of SmFe Melt

To explore the influence of spray angle on the atomization process of Sm Fe melt,the structure of nozzle based on the close-coupled nozzle,the atomization process of Sm Fe melt has been simulated using Fluent,and the influence of different spray angles on the flight distance before solidification of atomized droplets and droplet breakup degree had been analyzed. The results show that when the spray angle increases,the flight distance before solidification of droplets decreases,at 45 degrees flight distance is the minimum,then there is an increasing trend after 45° spray angle.When the spray angle increases,the SMD firstly decreases,and the SMD is the smallest at 45 degrees,which is about 7.58 μm,and the breakup of the droplets is the best,and then it increases when spray angle exceeds 45°. Considering the atomization effect,when the spray angle is 45 degrees,flight distance of droplet is the shortest at 14.66 mm,the SMD is the smallest,and the breakup of the droplets is the best.