Transport and entrapment of particles in steel continuous casting

Brian G. Thomas, Quan Yuan, Rui Liu, Sana Mahmood, Rajneesh Chaudhary

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A particle-entrapment model based on local force balances has been developed, implemented into computational models of turbulent fluid flow, and applied to simulate the entrapment of slag inclusions and bubbles during the continuous casting of steel slabs. Turbulent flow of molten steel is computed in the nozzle and mold using transient CFD models. Next, the transport and capture of over 30,000 particles are simulated using a Lagrangian approach. Particles touching the dendritic interface may be pushed away, dragged away by the transverse flow, or captured into the solidifying shell according to the results of a local balance of ten different forces. This criterion was validated by reproducing experimental results in two different systems. Finally, the model is applied to predict the entrapment distributions of different sized particles in a typical slab caster. Although more large particles are safely removed than small ones, the capture rate as defects is still high.

Original languageEnglish (US)
Title of host publicationCFD Modeling and Simulation in Materials Processing - Held During the TMS 2012 Annual Meeting and Exhibition
Pages279-286
Number of pages8
StatePublished - 2012
EventCFD Modeling and Simulation in Materials Processing - TMS 2012 Annual Meeting and Exhibition - Orlando, FL, United States
Duration: Mar 11 2012Mar 15 2012

Publication series

NameTMS Annual Meeting

Other

OtherCFD Modeling and Simulation in Materials Processing - TMS 2012 Annual Meeting and Exhibition
Country/TerritoryUnited States
CityOrlando, FL
Period3/11/123/15/12

Keywords

  • Continuous casting
  • Large Eddy simulation
  • Particle entrapment
  • Particle transport

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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