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International Heat Transfer Conference 16

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

METHODS FOR MODELING HEAT TRANSFER AND SOLIDIFICATION IN CONTINUOUS CASTING

Matthew T. Moore
Center for Innovation through Visualization and Simulation (CIVS) – Purdue University Northwest, 2200 169th Street, Hammond, IN 46323, USA

Bangju Chen
Center for Innovation through Visualization and Simulation (CIVS) – Purdue University Northwest, 2200 169th Street, Hammond, IN 46323, USA

Ken Morales
Research and Innovation – AK Steel Corporation, Middletown, Ohio, USA

Armin Silaen
Center for Innovation through Visualization and Simulation (CIVS) – Purdue University Northwest, 2200 169th Street, Hammond, IN 46323, USA

Chenn Q. Zhou
Center for Innovation through Visualization and Simulation (CIVS) – Purdue University Northwest, 2200 169th Street, Hammond, IN 46323, USA

DOI: 10.1615/IHTC16.mpf.022268
pages 6687-6694


MOTS CLÉS: Two-phase/Multiphase flow, Numerical simulation and super-computing, convection, latent heat, shell formation, solid-liquid interface

Résumé

Complex flow phenomena occurring within the mold region of a continuous caster result in the natural development of unsteady oscillating flow patterns, leading to increased internal and surface defects in solidified steel slabs. These unstable flow patterns are both fundamentally challenging and expensive to recreate through plant trials. However, computational fluid dynamics (CFD) modeling provides an alternative means to investigate flow instability and identify inefficiencies in current continuous casting processes. This work is part of an ongoing effort to develop a comprehensive continuous caster model, using the commercial STAR CCM+® software, and examines the simulated results obtained while performing a mesh sensitivity study for modeling the shell solidification in a continuous caster. Simulations were conducted using the k-omega (k-ω) shear-stress turbulence (SST) model for Eulerian-multiphase flow of a low carbon steel, under steady-state and transient conditions. The findings demonstrate noticeable dissimilarities in the predicted shell growth obtained using unstructured polyhedral or structured hexahedral meshing schemes for steady-state and transient simulations.

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