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The thermophysical peculiarities heat and mass transfer inoculators in melts metals

100%

Koshlak H.

2018

tom Vol. 2, nr 4

183--186

The article presents the results of research of thermophysical peculiarities obtaining volumetric amorphous structures in metals and alloys. This technology differs mainly the realization internal heat removal by means of local heat sink (inoculator). A mathematical model of melting inoculator in melts for optimizing the process of obtaining massive amorphous structures, which allows to reduce time of experimental research and material resources to create massive amorphous structures. Mathematical modeling of processes heat and mass transfer inoculator in melts allows you to identify peculiarities of the technological process, and establish influence inoculator on the degree of amorphization melt. The results provide an effective assessment of the intensity of heat transfer during the casting process, which makes it possible to estimate and predict the ability of alloys to the amorphization of the structure.

Calculation of heat transfer in fluid around gas-vapour bubbles

63%

Pavlenko A. , Koshlak H.

2017

tom Vol. 9, no. 1

59--62

In this paper the mathematical model for calculating heat transfer in the fluid that surrounds the oscillating gas – steam bubble. The mathematical model takes into account the changing thermal and physical characteristics the liquid, changing the size of bubbles, heat exchange processes at its border.