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Numerical Simulation of Transient Flow Patterns of Upper Swirls in Continuous Slab Casting Moulds
Author(s) -
Liu Rui,
Ji Wei,
Li Jin,
Shen Houfa,
Liu Baicheng
Publication year - 2008
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.200806175
Subject(s) - transient (computer programming) , mechanics , vortex , slab , flow (mathematics) , large eddy simulation , turbulence , geology , vortex shedding , continuous casting , materials science , scale (ratio) , computer simulation , physics , computer science , composite material , geophysics , reynolds number , operating system , quantum mechanics
The transient aspect of turbulent flow in a continuous slab casting mould is studied and the transient flow patterns of the upper rolls are investigated through the application of Large Eddy Simulation (LES), employing a static Smagorinsky sub‐grid scale (SGS) model. The unsteady and coherent features of the upper recirculation zones are found, and the mechanism causing vortices developing from the upper recirculation zones is described and analysed. Results show that the asymmetry of flow patterns of the upper rolls appears most of the time. The upper swirls may break into a series of relatively small scale vortices that are chaotically distributed, and large‐scale vortex shedding occurs during the switching process between flow patterns.