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Numerical and Physical Simulation of Tundish Fluid Flow Phenomena
Author(s) -
Odenthal HansJürgen,
Böiling Ralf,
Pfeifer Herbert
Publication year - 2003
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200300160
Subject(s) - tundish , particle image velocimetry , mechanics , turbulence , laser doppler velocimetry , volume of fluid method , velocimetry , particle tracking velocimetry , flow (mathematics) , materials science , continuous casting , computational fluid dynamics , turbulence kinetic energy , turbocharger , mechanical engineering , engineering , physics , metallurgy , gas compressor , medicine , blood flow
The fluid flow in a continuous casting tundish is numerically and physically simulated by means of water models. Results of residence time distribution (RTD) measurements and laser‐optical measurements (Laser Doppler Anemometry – LDA, Digital Particle Image Velocimetry‐DPIV) are used to validate the numerical results for water before the numerical simulation is transferred to the steel melt. The investigations are focused on both steady‐state and transient casting conditions. To reduce vortexing and turbulence in the tundish different types of turbo‐stoppers are installed in the water models and their influence on the spacious flow structure is discussed. The turbo‐stopper produces higher turbulence in the inlet region of the tundish, but this region is spatially more limited in relation to the flow without turbo‐stopper. Thereby a more homogeneous flow is created at the outlet of the tundish with better conditions for particle separation. Basic design criteria for the geometry of a turbo‐stopper are developed. Moreover, the processes of first tundish filling and ladle change are simulated at a downscaled water model and these results are compared with numerical simulations using a Volume of Fluid (VoF) model. This multiphase model is able to reproduce the motion of gas bubbles and waves at the free surface.