Temat: 64.70.Ja - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Numerical Analysis of the Rapid Solidification Process of NiTi Binary Alloy
Autorzy:: Ternik, P.
Zadravec, M.
Svetec, M.
Rudolf, R.
Powiązania:: https://bibliotekanauki.pl/articles/1402311.pdf
Data publikacji:: 2015-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 64.70.Ja
81.30.Fb
44.05.+e
Opis:: The objective of the present work is to analyse the solidification process of NiTi binary alloy. The physical medium is taken as an incompressible fluid where the heat is transferred by conduction and convection, including the thermal phase change phenomenon. The last one is modelled by the improvement procedure called enthalpy-porosity formulation, where the liquid-solid mushy zone is treated as a porous zone with porosity equal to the liquid fraction. The numerical model is based on the finite volume method in body fitted coordinates with a SIMPLER scheme to couple the pressure and velocity fields. The results are presented for the velocity and temperature field, as well as for the NiTi mass fraction during the solidification process.
Źródło:: Acta Physica Polonica A; 2015, 128, 1; 43-47
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: The Free Volume of Condensed Phases Confined in a Nanopore as Seen by Computer Simulations and Compared to PALS
Autorzy:: Račko, D.
Powiązania:: https://bibliotekanauki.pl/articles/1196175.pdf
Data publikacji:: 2014-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.70.Bj
61.20.Ja
76.60.-k
64.70.pm
Opis:: In this contribution the free volume of glycerol phase confined in a nanopore in a wide temperature range is computed. The computed free volume is compared to the previously computed values in the glycerol bulk. The mean cavity volumes are also discussed with the experimental measurements by positronium annihilation lifetime spectroscopy. The computer simulations show that in the case of the confined glycerol phase the mean cavity volumes are larger than in the simulated bulk, and also the temperature dependence has a different qualitative behavior; the computed data are in agreement with experimental measurements performed for glycerol in a pore of comparable size with diameter 6 nm. The simulations also indicate that an aspect of filling a pore is important for experimentalists. In the case of a perfectly sealed pore the cavity volume is observed to rise with decreasing temperature.
Źródło:: Acta Physica Polonica A; 2014, 125, 3; 785-788
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: High Resolution Density Map as the Visualization of a Larger Time Scale Molecular Dynamics
Autorzy:: Karbowniczek, P.
Powiązania:: https://bibliotekanauki.pl/articles/1189870.pdf
Data publikacji:: 2015-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.20.-p
64.70.dm
61.20.Ja
Opis:: A method of visualization of two-dimensional systems of particles in a large time scale molecular dynamics with application to the domain reorientation process in 2D Lennard-Jones system is presented. The described processing is general and can be used in comparing experimental results of atomic force microscopy with the results calculated using a computer as well as for predicting new phenomena. Domain reorientation process in 2D Lennard-Jones system approaching equilibrium is presented and confronted with the Fourier analysis of the data obtained for different initial parameters and at different states of aggregation. New border domain features accompanying this process are discussed.
Źródło:: Acta Physica Polonica A; 2015, 127, 6; 1644-1647
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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