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Mixing theories for gas‐stirred melts
Author(s) -
Mietz Jürgen,
Oeters Franz
Publication year - 1987
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.198700245
Subject(s) - mixing (physics) , thermodynamics , chemistry , physics , mechanical engineering , engineering , quantum mechanics
Initially, the paper gives a survey on known theoretical models of mixing in gas‐stirred melts. A new model that combines the concepts of the circulating concentration cloud and the two‐tank model is presented. In this model, the combined effect of recirculation flow and turbulent mixing is expressed by a number of ideally mixed tanks in series. The tanks in series are additionally connected with a dead volume according to the two‐tank model. In total, the model contains four characteristic parameters. The results of numerical calculations using the model are compared with experimental data of mixing in a water model and in a 40 t steel ladle both with centric gas‐stirring.