Influence of argon gas bubbles and non-metallic inclusions on the flow behavior in steel continuous casting
Influence of argon gas bubbles and non-metallic inclusions on the flow behavior in steel continuous casting
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DOI：
10.1016/j.msea.2005.08.178
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发表时间：
2005-12-15
期刊：
影响因子：
6.4
通讯作者：
Ludwig, A
中科院分区：
文献类型：
--
作者：
Pfeiler, C;Wu, M;Ludwig, A
本研究采用欧拉-拉格朗日方法来模拟钢熔体（连续相）的三维湍流（k-ε）流动以及连续铸造中单个非金属夹杂物和气泡（分散相）的轨迹。分散相被认为是大量的质量负载的颗粒具有不同类别的直径和密度。为了考虑连续相和分散相之间的相互作用，研究和比较了两种不同的方法。第一种方法，即单向耦合，只考虑了熔体流动对分散相轨迹的影响，而忽略了分散相对熔体流动的影响。对于第二种方法，即双向耦合，考虑了两种双向影响。所提出的结果表明，耦合的双向相互作用是必不可少的，以获得现实的结果，特别是在存在大气泡。(c)2005 Elsevier B. V.保留所有权利。
The present study uses an Eulerian-Lagrangian approach to model the 3D turbulence (k-epsilon) flow of the steel melt (continuous phase) and the trajectories of individual non-metallic inclusions and gas bubbles (dispersed phase) in a continuous casting. The dispersed phase is considered as numerous mass-loaded particles with different classes of diameters and densities. To consider the interaction between the continuous and the dispersed phases two different methods are studied and compared. The first method, i.e. the one-way coupling, considers only the impact of the melt flow on the trajectories of the dispersed phases, while the influence of the dispersed phases on the melt flow is ignored. With the second method, namely the two-way coupling, both bidirectional influences are considered. The presented results indicate that coupling the bidirectional interactions is essential to get realistic results, especially in the presence of large gas bubbles. (c) 2005 Elsevier B.V. All rights reserved.