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Your search keyword '"Morávka, J."' showing total 3 results
Start Over Author "Morávka, J." Topic fizikalno modeliranje
3 results on '"Morávka, J."'

1. Fizikalno modeliranje skrućivanja taline u loncu s argonskim miješanjem

Author

Karel Michalek, Gryc, K., and Morávka, J.

Subjects
lcsh:TN1-997, čelik, argonski mjehurići, fizikalno modeliranje, steel, ladles, gas argon bubbling, stir elements, physical modelling, mješači, lonak, lonac, lcsh:Mining engineering. Metallurgy
Abstract

The paper presents results of bath behaviour in the ladle model investigation during its gas argon bubbling realised by one or two stir elements situated in the ladle bottom. The study was performed with use of physical modelling method on a scale model 1 to 10. Development of homogenisation processes after start of bubbling was evaluated on the basis of electrical conductivity and temperature change, which were measured at three points of the ladle volume by conductivity and temperature sensors. Executed works were realised for conditions of 180 tons steel ladles., Članak rad prikazuje rezultate eksperimentalnog istraživanja ponašanja taline u modelu lonca s miješanjem pomoću mjehurića argona dovedenog kroz jedan ili dva mješača na dnu lonca. Istraživanje je provedeno koristeći metodu fizikalnog modeliranja na modelu u mjerilu 1 : 10. Tijek skrućivanja (homogenizacije) nakon početka upuštanja mjehurića procjenjivan je temeljem promjena električne vodljivosti i temperature, mjerenjima pomoću senzora vodljivosti i temeprature na tri točke unutar volumena lonca. Eksperiment je proveden za uvjete lonca od 180 tona.

Published
2009

2. MATHEMATICAL IDENTIFICATION OF HOMOGENISATION PROCESSES IN ARGON STIRRED LADLE.

Author

Michalek, K., Morávka, J., and Gryc, K.

Subjects
*LADLE metallurgy, *ARGON, *MATHEMATICAL models, *ASYMPTOTIC homogenization, *STEEL
Abstract

Mathematical models processed results of experimental investigation obtained during ladle gas argon bubbling realised by stir elements situated in the ladle bottom. Exact theoretical description of processes occurring at argon bubbling into steel would be very complex and it would lead to a system of non-linear partial differential equations describing transfer of momentum, heat, components, and with excitation function in the form of equation of so called deterministic chaos (argon bubbling). On the basis of pouring ladle model diagram and concentrations courses, the simplified linear physically adequate model was proposed, which described behaviour of steel concentration in pouring ladle during its bubbling. The analysed process was understood in the form of a cybernetic model. [ABSTRACT FROM AUTHOR]

Published
2009

3. PHYSICAL MODELLING OF BATH HOMOGENISATION IN ARGON STIRRED LADLE.

Author

Michalek, K., Gryc, K., and Morávka, J.

Subjects
*LADLE metallurgy, *ARGON, *ASYMPTOTIC homogenization, *BUBBLE chambers, *BUBBLE dynamics, *STEEL
Abstract

The paper presents results of bath behaviour in the ladle model investigation during its gas argon bubbling realised by one or two stir elements situated in the ladle bottom. The study was performed with use of physical modelling method on a scale model 1 to 10. Development of homogenisation processes after start of bubbling was evaluated on the basis of electrical conductivity and temperature change, which were measured at three points of the ladle volume by conductivity and temperature sensors. Executed works were realised for conditions of 180 tons steel ladles. [ABSTRACT FROM AUTHOR]

Published
2009

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