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

• Autorzy: Michalek K. , Gryc K. , Strasak P.

Warianty tytułu

EN

Physical and numerical modelling study of metal melt through-flow pattern in the flow metallurgical aggregate under different boundary conditions

• Języki publikacji: CS

Abstrakty

EN

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.

Słowa kluczowe

PL

stal; kadź pośrednia; agregat

EN

steel; tundish; physical modelling; numerical modelling; flow pattern; F-curves

• Wydawca: Instytut Metalurgii Żelaza im. Stanisława Staszica
• Czasopismo: Prace Instytutu Metalurgii Żelaza
• Rocznik: 2009
• Tom: T. 61, nr 5
• Strony: 98--101
• Opis fizyczny: Bibliogr. 3 poz.

Twórcy

autor

Michalek K.

autor

Gryc K.

autor

Strasak P.

• VŠB-Technická univerzita Ostrava

Bibliografia

• 1. Michalek K.: Využití fyzikálního a numerického modelování pro optimalizaci metalurgických procesů. VŠB-TU Ostrava, 2001, 125 s. ISBN 80–7078-861–5.
• 2. Morávka J., Mrajca V., Michalek K., Pindor J., Gryc K., Sawová, M.: Possible Ways of Processing Results of Transition Phenomena Occurring in the Tundish Using Approximation Methods and Their Implementation in Field Practice. In 1st International Conference STEELSIM 2005, 25 - 27 October, 2005, Brno. Czech Metallurgical Society, Třinec, Czech Republic, 2005. pp. 131-145. ISBN 80-239-5005-3.
• 3. Střasák P.: Analýza proudění oceli v mezipánvi pro pětiproudé sochorové ZPO č. 1, Technická zpráva, TechSoft Engineering, s.r.o., 2006, 148 s.