漩涡式铝屑沉熔装置的数值模拟

利用数值模拟的方法研究了侧井式铝屑炉涡流室内的流场和铝屑的运动轨迹,分析了不同条件下涡流室对铝屑颗粒沉浮状况的影响规律。结果表明:将涡流室的入口调整为上倾15°后,涡流室内流场产生的漩涡明显变大、变深,并且铝屑的上浮率由原来的73%降低到59%,说明涡流室入口角度对铝屑的沉浮状况影响显著;在选取3个不同加料位置后发现,在文中位置2加料时铝屑的上浮率为63%,而在涡流室中央加料时铝屑上浮率为73%,相差达到10个百分点,说明不同的加料位置对铝屑颗粒沉浮状况的影响同样显著。

Numerical Simulation of Eddy Current Aluminum Scrap Melting Device

The flow field and the trajectories of Aluminum scrap in pit-side eddy current Aluminum scrap furnace are studied by using numerical simulation method. The results show that： while the entrance of the swirl chamber is adjusted to 15° upwards, the vortex flow in the swirl chamber becomes larger and deeper, and the floating rate of Aluminum scraps change from 73% to 59%, which shows that the entrance angle of swirl chamber has a large influence on the ups and downs of Aluminum scraps. After selecting three different feeding locations, it is found that when feeding at position 2 in this paper, the floating rate of Aluminum scraps is 63%, while in feeding at the central position, the rate is 73%. There are 10 percentage points between them, which show that the different feeding locations also have significant influence on the ups and downs of Aluminum scrap.