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Wyszukujesz frazę "foundry model" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Research on the Influence of Basic Parameters of the Pre-Expansion of Granules Density
Autorzy:
Buczkowska, K.
Kaczorowski, R.
Pacyniak, T.
Powiązania:
https://bibliotekanauki.pl/articles/382544.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundry process
lost technology
polystyrene model
proces odlewania
technologia lost
model polistyrenowy
Opis:
The paper presents the process of pre-expanded polystyrene used to produce models in the Lost Technology. There were research on pre-expansion process in order to determine the effect of pressure and time for the initial expansion of the materials density. Analysis of the results confirmed that the higher the pre-expansion pressure is the materials density decreases. There was also a change in the intensity of the process in function of time and pressure, which may indicate the phenomena of material physical and chemical properties during the process.
Źródło:
Archives of Foundry Engineering; 2013, 13, 2 spec.; 22-28
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dual Phase Lag Model of Melting Process in Domain of Metal Film Subjected to an External Heat Flux
Autorzy:
Mochnacki, B.
Ciesielski, M.
Powiązania:
https://bibliotekanauki.pl/articles/382640.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
theoretical basis
foundry process
solidification process
microscale heat transfer
dual phase lag model
control volume method
podstawy teoretyczne
proces odlewania
proces krzepnięcia
wymiana ciepła
model dwufazowy
Opis:
Heating process in the domain of thin metal film subjected to a strong laser pulse are discussed. The mathematical model of the process considered is based on the dual-phase-lag equation (DPLE) which results from the generalized form of the Fourier law. This approach is, first of all, used in the case of micro-scale heat transfer problems (the extremely short duration, extreme temperature gradients and very small geometrical dimensions of the domain considered). The external heating (a laser action) is substituted by the introduction of internal heat source to the DPLE. To model the melting process in domain of pure metal (chromium) the approach basing on the artificial mushy zone introduction is used and the main goal of investigation is the verification of influence of the artificial mushy zone ‘width’ on the results of melting modeling. At the stage of numerical modeling the author’s version of the Control Volume Method is used. In the final part of the paper the examples of computations and conclusions are presented.
Źródło:
Archives of Foundry Engineering; 2016, 16, 4; 85-90
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of Melting and Resolidification in Domain of Metal Film Subjected to a Laser Pulse
Autorzy:
Majchrzak, E.
Mochnacki, B.
Powiązania:
https://bibliotekanauki.pl/articles/379913.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundry process
heat transfer
melting
solidification
dual phase lag model
numerical methods
theoretical basis
proces odlewniczy
przenikanie ciepła
topienie
krzepnięcie
model dwufazowy
metody numeryczne
podstawy teoretyczne
Opis:
Thermal processes in domain of thin metal film subjected to a strong laser pulse are discussed. The heating of domain considered causes the melting and next (after the end of beam impact) the resolidification of metal superficial layer. The laser action (a time dependent bell-type function) is taken into account by the introduction of internal heat source in the energy equation describing the heat transfer in domain of metal film. Taking into account the extremely short duration, extreme temperature gradients and very small geometrical dimensions of the domain considered, the mathematical model of the process is based on the dual phase lag equation supplemented by the suitable boundary-initial conditions. To model the phase transitions the artificial mushy zone is introduced. At the stage of numerical modeling the Control Volume Method is used. The examples of computations are also presented.
Źródło:
Archives of Foundry Engineering; 2016, 16, 1; 41-44
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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