摘要:
为研究雾化角度对钐铁熔体雾化过程的影响, 喷嘴的结构选择紧耦合气雾化喷嘴, 运用Fluent软件对钐铁熔体雾化过程进行数值模拟, 分析不同的喷雾角度对雾化液滴凝固前飞行距离和液滴破碎程度的影响。结果表明:当喷雾角度增加时液滴凝固前飞行距离先减小, 在45°时达到最小, 之后又有增大趋势;当喷雾角度增加时液滴的索特平均直径 (SMD) 先减小, 在45°时索特平均直径最小, 为7.58μm, 液滴的破碎最充分, 之后又增大。综合考虑雾化效果, 当喷雾角度为45°时, 液滴的飞行距离最短为14.66 mm, 索特平均直径最小, 液滴的破碎效果也最好。
Abstract:
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.
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