Slidegate dithering effects on transient flow and mold level fluctuations

Rui Liu, Brian G. Thomas, Love Kalra, Tathagata Bhattacharya, Aloka Dasgupta

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


The effects of slide-gate dithering on surface flow behavior during continuous casting are investigated via mathematical modeling and plant trial measurements. A transient turbulent flow model with a new free surface tracking algorithm using a dynamic mesh was developed, validated, and applied to match different measured level-fluctuation histories. Simulation results explain the mechanism of large sloshing observed in a dithering trial when the dithering frequency matches the mold natural frequency. The associated flow-rate variations then amplify the velocity variations in the circulating fluid. Parametric studies reveal that mold level fluctuations increase with increasing casting speed, and dithering stroke.

Original languageEnglish (US)
Title of host publicationAISTech 2013 - Proceedings of the Iron and Steel Technology Conference
Number of pages14
StatePublished - 2013
EventAISTech 2013 Iron and Steel Technology Conference - Pittsburgh, PA, United States
Duration: May 6 2013May 9 2013

Publication series

NameAISTech - Iron and Steel Technology Conference Proceedings
ISSN (Print)1551-6997


OtherAISTech 2013 Iron and Steel Technology Conference
Country/TerritoryUnited States
CityPittsburgh, PA


  • Dynamic mesh technique
  • Free-surface tracking
  • Mold level fluctuation
  • Mold sloshing
  • Slide-gate dithering

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering


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