Dynamics of thermophysical parameters of silver ablation jets at atmospheric pressure

DOI: https://doi.org/10.33581/2520-2243-2020-2-4-9

Abstract

The paper demonstrates an approach to modeling the thermophysical parameters of vapor in an ablative silver jet propagating at atmospheric pressure. The proposed semi-empirical model is based on the modification of the Anisimov – Luk’yanchuk model taking into account the Zeldovich – Raiser dynamic condensation theory. Such process of dynamic condensation of spherical (or semi-spherical) ablative jets can also be graphically represented as passing in the expanding vapor-plasma cloud of the three spatial concentric spherical waves from the periphery to the center of cloud. There are «saturation» wave (corresponding to the moment of crossing the Poisson adiabate with saturation adiabate at the phase diagram of vapor), wave of nuclear «etching» (the moment of greatest supercooling of vapor in the jet) and the «quenching» wave (stabilization of the condensation degree of the vapor in the jet). Due to the revision of a number of basements of the Anisimov – Luk’yanchuk  model, it was possible to offer an adequate description of thermodynamic processes occurring at normal atmospheric gas pressure.

Author Biography

Konstantin V. Kozadaev, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

doctor of science (physics and mathematics), docent; vice-rector for academic affairs and internationalization of education

 

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Published
2020-06-01
Keywords: ablative jet, the theory of Zeldovich – Raiser, dynamic condensation, nanoparticles of metals
How to Cite
Kozadaev, K. V. (2020). Dynamics of thermophysical parameters of silver ablation jets at atmospheric pressure. Journal of the Belarusian State University. Physics, 2, 4-9. https://doi.org/10.33581/2520-2243-2020-2-4-9
Issue
No 2 (2020): Journal of the Belarusian State University. Physics
Section
Nanomaterials and Nanotechnologies

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