Euler-Euler Large Eddy Simulation (EELES) scheme has been developed to simulate the two-phase flow of argon gas and molten steel in slab continuous casting mold. The approach is used describe equations motion flow. drag force, lift force virtual mass are incorporated this model. Both turbulence simulated using large eddy simulation (LES). results agree acceptably well with water model experimental measurements instantaneous structures. pattern lower recirculation zone expected be...

In ladle metallurgy, the role of argon gas purging in liquid steel is well recognized. One key aspect this process prediction volume fraction and bubble diameter. Calculation size important as it significantly modified by injection system flow rate, also directly determines buoyancy which influences physical mixing surface reactions. study, a porous plug was used for common practice industry one-third scale water model established. Then numerical based on Eulerian multiphase established...

A Mathematical model has been developed to analyze the transient three-dimensional and three-phase flow in an argon gas bottom stirring ladle with one two off-centered porous plugs. Multiphase Volume of Fluid (VOF) method is used simulate behaviors slag layer. Numerical simulation was conducted clarify phenomena injection into molten steel. When injected steel a ladle, rising passage formed near plug, then bubbles are created The impinge on intermittently break layer create eye....

To obtain a better understanding the gas-steel-slag three-phase flow in ladle metallurgy with eccentric gas bubbling, both single-plug-stirred and dual-plug-stirred water model systems were employed. The plume Froude number derived from buoyancy of bubble was used to characterize two-phase flow. elctrical conductivity measurement technique applied measure mixing time. A video monitor slag eye open software called ImageJ taken quantify area. Some experiments carried out determine location...

A three-dimensional (3D) finite element model was developed to simulate the current density, magnetic field, electromagnetic force and Joule heating for a system of electrode, slag ingot in electroslag remelting processes. Especially, skin effect is taken into account field by vector potential method. Simulated flux density compared with experiment obtained good agreement. Numerical results show that becomes strong maximum occurs at surface electrode ingot, upper nearby interface slag. The...

Gas stirring ladle is a complex three-phase reactor which contains phases whose interfaces are in different scales. The bubble-liquid interaction also leads to multi-scale eddy structures. present work proposes mathematical model simulate the multiphase flow ladle, directly captures large phase and eddies, while models sub-grid scale eddies using respectively discrete bubble (DBM) one equation viscosity (OEEVM) simulation (LES) approach. By this way, mesh resolution can be defined relatively...

The flow pattern in an opaque mold cannot be readily visible, and worker experience plays a major role controlling it, even though it has significant impact on slab quality continuous casting (CC) mold. An Eulerian–Eulerian two‐fluid model is used to comprehensively study the two‐phase of argon molten steel CC positions vortex centers upper/lower recirculation zones impingement point jet narrow face are identified their distribution analyzed. interactive effects speed, rate, immersion depth...

This study employs computational fluid dynamics (CFD) coupled with the population balance model (PBM) to explore sensitivity of drag for predictive accuracy gas–liquid two-phase flow in continuous casting (CC) mold. Several single bubble models have been numerically evaluated high turbulent intensity and gas rate operation parameters. Then, influence turbulence effect swarm mechanisms on dynamic behaviors are investigated. The predicted mean diameter pattern were studied compared...

In this study, a coupled multiphysics field model combining finite‐element and finite‐volume modeling is developed to investigate the effect of fusion‐welded component geometric dimension on electroslag fusion welding (ESFW) process, reliability verified experimentally. results, it shown that for parts with definite geometrical dimensions, vertical scheme reduces amount slag current, but total time long heat‐affected zone large; horizontal opposite. The preset rated current increases...