Critical Considerations for Numerical Simulation of Multiphase Fluid Dynamics in Gas-Stirred Vessels

Mishra, Rishikesh; Mazumdar, Dipak

doi:10.1007/s12666-023-02896-3

Cited by 1 publication

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Accurate turbulence modeling and selection of correct interface capturing schemes are essential for simulating the twophase, gas-liquid flows. [38][39][40] To this end, first, the performance of the different interface capturing schemes has been assessed by comparing the predicted and experimental tundish volume fractions at a liquid flow rate of 105 lpm and 2% gas loading ratio, as shown in Figure 7a. This suggests that apart from the compressive scheme, which underpredicts the dispersed plug flow volume somewhat, very reasonable agreement between prediction and measurements is readily apparent for all the other schemes.…”

Section: Uncertainties and Experimental Validation Of The Flow Modelsmentioning

confidence: 99%

Role of Gas Aspiration through Ladle Shroud and Influence on Tundish Hydrodynamic Performances: A Physical and Mathematical Modeling Study

Ranjan,

Mazumdar

2024

steel research int.

View full text Add to dashboard Cite

Gas aspiration through ladle shroud, during the teeming of a ladle into a tundish, has been investigated via physical and mathematical modeling. To this end, a volume of fluid‐based two‐phase turbulent flow model (in conjunction with the standard k–ε turbulence model) and a full‐scale two‐strand bloom casting tundish have been applied. Both flow and residence time distribution measurements are carried out in the full‐scale tundish system, adopting well‐established measurement techniques. Computational results, supported appropriately with experimentally measured data, indicate that gas aspiration alters flow and turbulence profoundly in the vicinity of the shroud entry zone. Early reversal of jetting flow toward the free surface, due to the buoyancy of the entrained gas, increases the overall intensity of motion in the tundish, creating more mixing flow volumes at the expense of plug flow volume. Most importantly, however, gas aspiration through shroud tends to drastically cut down interactions between the down coming liquid jet metal and the pouring box, making the specific design and shape of a pouring box redundant toward desirable flow modification. Finally, it is shown that strong surface flows and turbulence, generated due to gas aspiration, can be suitably damped by deploying a set of weirs, increasing plug flow volume in tundish.

show abstract

Section: Uncertainties and Experimental Validation Of The Flow Modelsmentioning

confidence: 99%

Role of Gas Aspiration through Ladle Shroud and Influence on Tundish Hydrodynamic Performances: A Physical and Mathematical Modeling Study

Ranjan,

Mazumdar

2024

steel research int.

View full text Add to dashboard Cite

show abstract

Critical Considerations for Numerical Simulation of Multiphase Fluid Dynamics in Gas-Stirred Vessels

Cited by 1 publication

References 26 publications

Role of Gas Aspiration through Ladle Shroud and Influence on Tundish Hydrodynamic Performances: A Physical and Mathematical Modeling Study

Role of Gas Aspiration through Ladle Shroud and Influence on Tundish Hydrodynamic Performances: A Physical and Mathematical Modeling Study

Contact Info

Product

Resources

About