Premium
Simulation of the Effect of Steel Flow Velocity on Slag Droplet Distribution and Interfacial Area Between Steel and Slag
Author(s) -
Sulasalmi Petri,
Visuri VilleValtteri,
Kärnä Aki,
Fabritius Timo
Publication year - 2015
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.201400026
Subject(s) - volume of fluid method , materials science , slag (welding) , ladle , computational fluid dynamics , mechanics , metallurgy , sauter mean diameter , entrainment (biomusicology) , multiphase flow , composite material , flow (mathematics) , mechanical engineering , nozzle , engineering , philosophy , physics , rhythm , aesthetics
Computational fluid dynamics (CFD) simulations have been carried out to study interfacial velocity and its effect on slag emulsification at the steel–slag interface. The multiphase volume of fluid (VOF) method was used to track the interface between slag and steel and a user defined function (UDF) was applied to calculate the interfacial velocity and to track separate droplets. Slag entrainment based on composition adjustment by sealed argon bubbling‐oxygen blowing (CAS‐OB) process was simulated using different inlet velocities of steel. The main objective of the present work was to study how steel flow velocity effects droplet distributions. Continuous Rosin–Rammler–Sperling (RRS) distribution function was fitted to computational results in order to provide a quantitative description of the droplet size distribution. The generation rates of the interfacial area between slag and steel were estimated based on obtained RRS‐distributions. The Sauter diameter was found to vary between 4 and 6 mm and the generation rate of the interfacial area between 0.2 and 0.6 m 2 s −1 . The results agree well with previous studies presented in the literature.