Speaker
Georg Reiss
(MCL)
Description
The present paper presents a front tracking interface numerical model for the simulation of facetted crystal growth, taken into account the incidence of flow. This model was applied to the build-up growth (Fe2Al5 faceted crystals) occurring during the production of Zn coated steel sheets (Galvanizing industry) on the bath hardware. In the galvanizing industry their occurrence is a problem and therefore it should be limited. Different cases were simulated where the relative flow velocity was varied from 0 m/s to 1 m/s. These cases reproduce the industrial conditions of the growth on the stationary hardware as on the rotating bath hardware. Comparison was made between simulation and experimental observation of crystals shape and size. The growth was found to be coupled with the relative flow velocity and the roughness of the surface roll, being the result of interface kinetics and flow hydrodynamics induced kinetics.
Keywords
build-up,
dross,
faceted crystals,
flow hydrodynamics,
kinetics,
simulation,
modeling,
Galvanizing
Author
Dr
Abdellah Kharicha
(Montanuniversitaet Leoben)
Co-authors
Dr
Frank Goodwin
(International Zinc Association)
Georg Reiss
(MCL)
Dr
Mihaela Stefan-Kharicha
(MontanUniversitaet Leoben/Department of Metalurgy/Simulation and Modelling of Metallurgical Processes)
Dr
Werner Eßl
(Materials Center Leoben Forschung GmbH)