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- Title
Multiscale and Adaptive Modeling of Bubbling Flow and Slag Layer Behavior in Gas-Stirring Vessels.
- Authors
Li, Linmin; Xu, Weisen; Li, Xiaojun; Sun, Xun; Yang, Guojun; Zhu, Zuchao
- Abstract
The bubble transportation and bubble–steel–slag interactions in gas-stirring vessels in metallurgical processes is a quite complicated multiphase flow, intricate with multiple time and space scales. The present work implements a two-way discrete-continuum transition algorithm in a multiscale model for the simulation of bubble injection, coalescence, and its interaction with the bath and slag layer. The interfaces between liquid steel, gas, and slag are captured using the volume of fluid (VOF) and adaptive mesh refinement (AMR) methods for adaptively improving the interface resolution. For microbubbles that are unable to be resolved, a discrete phase model (DPM) is applied by considering the coalescence using a modified collision model. Most importantly, the two-way transition between DPM and VOF-AMR is mainly achieved by introducing criteria and specific source terms into the equations. The predicted bubble diameter evolution and the slag eye size in the vessel are both in good agreement with the experimental measurements. Using the present modeling framework, the bubbling flow and the slag layer behavior are both well represented, including the detailed phenomena of bubble aggregation and breakage, bubble splashing on the top surface, slag eye fluctuation, and slag droplet formation, etc.
- Subjects
MULTISCALE modeling; SLAG; MULTIPHASE flow; BUBBLES; MICROBUBBLES
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2023, Vol 75, Issue 4, p1357
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-022-05675-5