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Similarity considerations in the physical modelling of steel making tundish systems
Author(s) -
Mazumdar Dipak,
Yamanoglu Guler,
Shankarnarayanan Ramani,
Guthrie Roderick I. L.
Publication year - 1995
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199501764
Subject(s) - tundish , froude number , friction factor , reynolds number , mechanics , flow (mathematics) , scaling , scale factor (cosmology) , physics , mathematics , thermodynamics , geometry , turbulence , cosmology , quantum mechanics , metric expansion of space , dark energy , nozzle
To assess and quantify the relative importance of Reynolds and Froude numbers in reduced scale model studies (these cannot be simultaneously respected when the scale factor is less than unity), aqueous model investigations were carried out on three different laboratory scale tundish models. The experimental tundish systems included two strand, five strand skewed delta shaped and six strand rectangular shaped vessels. Experimental observations show that the depth of liquid in the model would only correspond to that in the full scale system, provided the model flow rate is scaled in accordance with the relationship: Q m = λ 5/2 Q f.S , in which, A is the geometrical scaling factor. Furthermore, on the basis of residence time distribution measurements in two different configurations of the five strand tundish, it was demonstrated explicitly that flow phenomena in tundish systems are largely dominated by inertial forces and are therefore, essentially Froude dominated.