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Wyszukujesz frazę "Falkus, J." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
A Comparison of Models Describing Heat Transfer in the Primary Cooling Zone of a Continuous Casting Machine
Porównanie modeli opisujących wymianę ciepła w pierwotnej strefie chłodzenia maszyny COS
Autorzy:
Miłkowska-Piszczek, K.
Rywotycki, M.
Falkus, J.
Konopka, K.
Powiązania:
https://bibliotekanauki.pl/articles/355503.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
continuous casting of steel
heat transfer coefficient
numerical modelling
ProCAST
ciągłe odlewanie stali
współczynnik przenikania ciepła
modelowanie numeryczne
Opis:
This paper presents the findings of research conducted concerning the determination of thermal boundary conditions for the steel continuous casting process within the primary cooling zone. A cast slab - with dimensions of 1100 mm×220 mm - was analysed, and models described in references were compared with the authors’ model. The presented models were verified on the basis of an industrial database. The research problem was solved with the finite element method using the ProCAST software package.
W pracy przedstawiono wyniki badań dotyczących wyznaczenia termicznych warunków brzegowych dla procesu ciągłego odlewania stali w obszarze strefy pierwotnego chłodzenia. Analizie poddano wlewek płaski o wymiarach 1100×220 mm. W obliczeniach porównano modele opisane w literaturze wraz z modelem własnym. Zaprezentowane modele zweryfikowano na podstawie przemysłowej bazy danych. Zadanie zostało rozwiązane metodą elementów skończonych z zastosowaniem pakietu oprogramowania ProCAST.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 1; 239-244
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of heat flux at a solid-solid intreface
Autorzy:
Rywotycki, M.
Malinowski, Z.
Sołek, K.
Falkus, J.
Miłkowska-Piszczek, K.
Powiązania:
https://bibliotekanauki.pl/articles/356275.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
continuous casting of steel
heat transfer
inverse method
rolls
Opis:
Determining the boundary conditions of heat transfer in steel manufacturing is a very important issue. The heat transfer effect during contact of two solid bodies occurs in the continuous casting steel process. The temperature fields of solids taking part in heat transfer are described by the Fourier equation. The boundary conditions of heat transfer must be determined to get an accurate solution to the heat conduction equation. The heat flux between the tool and the object processed depends mainly on temperature, pressure and time. It is very difficult and complicated to accomplish direct identification and determination of the boundary conditions in this process. The solution to this problem may be the construction of a process model, performing measurements at a test stand, and using numerical methods. The proposed model must be verified on the basis of parameters which can easily be measured in industrial processes. One of them is temperature, which may be used in inverse methods to determine the heat transfer coefficient. This work presents the methodology for determining the heat flux between two solid bodies staying in contact. It consists of two stages – the experiment and the numerical computation. The problem was solved by using the finite element method (FEM) and a numerical program developed at AGH University of Science and Technology in Krakow. The findings of the conducted research are relationships describing the value of the heat flux versus the contact time and surface temperature.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 1; 79-86
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of Heat Transfer at the Solid to Solid Interface
Autorzy:
Rywotycki, M.
Malinowski, Z.
Falkus, J.
Sołek, K.
Szajding, A.
Miłkowska-Piszczek, K.
Powiązania:
https://bibliotekanauki.pl/articles/958225.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heat transfer
inverse method
solid - solid interface
Opis:
In technological process of steel industry heat transfer is a very important factor. Heat transfer plays an essential role especially in rolling and forging processes. Heat flux between a tool and work piece is a function of temperature, pressure and time. A methodology for the determination of the heat transfer at solid to solid interface has been developed. It involves physical experiment and numerical methods. The first one requires measurements of the temperature variations at specified points in the two samples brought into contact. Samples made of C45 and NC6 steels have been employed in physical experiment. One of the samples was heated to an initial temperature of: 800°C, 1000°C and 1100°C. The second sample has been kept at room temperature. The numerical part makes use of the inverse method for calculating the heat flux and at the interface. The method involves the temperature field simulation in the axially symmetrical samples. The objective function is bulled up as a dimensionless error norm between measured and computed temperatures. The variable metric method is employed in the objective function minimization. The heat transfer coefficient variation in time at the boundary surface is approximated by cubic spline functions. The influence of pressure and temperature on the heat flux has been analysed. The problem has been solved by applying the inverse procedure and finite element method for the temperature field simulations. The self-developed software has been used. The simulation results, along with their analysis, have been presented.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 1; 341-346
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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