Mathematical Modeling of Multi-sized Argon Gas Bubbles Motion and Its Impact on Melt Flow in Continuous Casting Mold of Steel
Mathematical Modeling of Multi-sized Argon Gas Bubbles Motion and Its Impact on Melt Flow in Continuous Casting Mold of Steel
复制标题
钢连铸结晶器多尺寸氩气泡运动及其对熔体流动影响的数学模型
DOI：
10.1016/s1006-706x(14)60062-5
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发表时间：
2014-04
影响因子：
2.5
通讯作者：
Zongshu Zou
中科院分区：
文献类型：
--
作者：
Tao ZHANG;Shen DENG;Nan WANG;Zongshu Zou
使用欧拉-拉格朗日方法模拟了连铸模具中钢液（连续相）的 3D 湍流 ke 模型流动和单个气泡（分散相）的轨迹。为了研究气泡尺寸分布的影响，气泡半径的初始值设置为0.1-2.5 mm，遵循正态分布。结果表明，在浸入式喷嘴（SEN）中，空隙率仅分布在壁面附近。由于气泡运动仅限于壁面，脱氧产物无法接触壁面，从而防止堵塞。在模具中，半径为0.25-2.5毫米的气泡将移动到顶面。从端口发出的较大气泡将攻击弯液面并导致流体在喷嘴附近的顶表面中向上流动。它可能会导致结晶器粉末滞留在模具中。半径为0.1~0.25mm的气泡会向靠近窄面和宽面的区域移动。这些小气泡可能会被凝固前沿捕获。大部分移动到狭窄表面的气泡将随上升流流动，而其他气泡则随下降流流动。
The 3D turbulence ke model flow of the steel melt (continuous phase) and the trajectories of individual gas bubbles (dispersed phase) in a continuous casting mold were simulated using an Eulerian-Lagrangian approach. In order to investigate the effect of bubble size distribution, the radii of bubbles are set with an initial value of 0.1–2.5 mm which follows the normal distribution. The presented results indicate that, in the submerged entry nozzle (SEN), the distribution of void fraction is only near the wall. Due to the fact that the bubbles motion is only limited to the wall, the deoxidization products have no access to contacting the wall, which prevents clogging. In the mold, the bubbles with a radius of 0.25–2.5 mm will move to the top surface. Larger bubbles issuing out of the ports will attack the meniscus and induce the fluid flows upwards in the top surface near the nozzle. It may induce mold powder entrapment into the mold. The bubbles with a radius of 0.1–0.25 mm will move to the zone near the narrow surface and the wide surface. These small bubbles will probably be trapped by the solidification front. Most of the bubbles moving to the narrow surface will flow with the ascending flow, while others will flow with the descending flow.
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影响因子：
1.8
作者：
T. Toh;H. Hajime;H. Harada
通讯作者：
T. Toh;H. Hajime;H. Harada
DOI：
10.1201/9781482277333
发表时间：
2001-10
影响因子：
0.3
作者：
Kuang-Oscar Yu
通讯作者：
Kuang-Oscar Yu
DOI：
10.1007/bf02650074
发表时间：
1994-08
期刊：
Metallurgical and Materials Transactions B
影响因子：
--
作者：
B. Thomas;X. Huang;R. C. Sussman
通讯作者：
B. Thomas;X. Huang;R. C. Sussman
影响因子：
1.8
作者：
K. Takatani;Y. Tanizawa;H. Mizukami;Kenzi Nishimura
通讯作者：
K. Takatani;Y. Tanizawa;H. Mizukami;Kenzi Nishimura
影响因子：
1.8
作者：
N. Kubo;T. Ishii;J. Kubota;T. Ikagawa
通讯作者：
N. Kubo;T. Ishii;J. Kubota;T. Ikagawa