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1 Prace Instytutu Metalurgii Żelaza

1 2009

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Fyzikální a numerické modelové studium charakteru proudění kovové taveniny v průtočném metalurgickém agregátu při různých okrajových podmínkách

Michalek K., Gryc K., Strasak P.

Prace Instytutu Metalurgii Żelaza

2009

T. 61, nr 5

98-101

The paper is devoted to a study of metal melt flow pattern in the through-flow metallurgical aggregate (tundish) under different boundary conditions. For evaluating of flow conditions in the tundish a permanent concentration change (Heaviside unit step) was used. Experiments carried out by physical model in the geometric scale 1:5 to the real tundish and simultaneously carried out by numerical simulations was done for one type of impact pad design under isothermal flow conditions. Physical modelling was done by changing of KCl water solution concentration during experiments and by measuring of conductibility in the inlet and outlets areas (thermal and conductibility probes). Obtained data was recalculated based upon Freude’s criterion to the real tundish conditions. For mathematical identification of individual F-curves the authentic approximate method was used. Numerical modelling was realized by CFD program Fluent. Results obtained from both modelling methods are compared by defined dimensionless concentration value (0,1) under conditions of three different surface highs for three different casting speeds. It could be noted that results obtained from both modelling methods are comparable – the methodology is set correctly.