|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||CFD Modeling and Simulation in Materials Processing
||Coupling of VOF and DPM Models to Simulate the Melt Flow and Bubbles Behavior in the RH Process
||Chang Liu, Lifeng Zhang, Ying Ren
|On-Site Speaker (Planned)
In the current study, a three-dimension mathematical model was established to simulate the flow and mixing characteristics during the RH process. The VOF model was employed to describe the flow-pattern of the steel-argon system, and the injected bubbles were treated as discrete particles using the DPM model. A water model with the same geometrical size and experiment conditions as the mathematical model was applied to validate the calculated results. In order to consider the bubbles expanding process, the bubbles diameter was modified according to the temperature, the local pressure, and the stirring power. Since the high temperature and the low pressure in the up-leg snorkel of the RH reactor, the argon bubbles would expand rapidly. Nevertheless, the final bubble diameter was limited by the Turbulent dissipation rate. The expansion of bubbles has a great impact on the fluid flow in the RH system.
||Planned: None Selected