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Zhurnal Vychislitel'noi Matematiki i Matematicheskoi Fiziki, 2023, Volume 63, Number 12, Pages 1960–1972
DOI: https://doi.org/10.31857/S0044466923120207
(Mi zvmmf11663)
 

Mathematical physics

Evolution of the shape of a gas cloud during pulsed laser evaporation into vacuum: Direct simulation Monte Carlo and the solution of a model equation

A. A. Morozovab, V. A. Titarevb

a S.S. Kutateladze Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences, 630090, Novosibirsk, Russia
b Federal Research Center "Computer Science and Control" of Russian Academy of Sciences, 119333, Moscow, Russia
Abstract: The dynamics of gas expansion during nanosecond laser evaporation into vacuum is studied. The problem is considered in an axisymmetric formulation for a wide range of parameters: the number of evaporated monolayers and the size of the evaporation spot. To obtain a reliable numerical solution, two different kinetic approaches are used – the direct simulation Monte Carlo method and solution of the BGK model kinetic equation. The change in the shape of the cloud of evaporated substance during the expansion process is analyzed. The strong influence of the degree of rarefaction on the shape of the forming cloud is shown. When a large number of monolayers evaporate, good agreement with the continuum solution is observed.
Key words: kinetic BGK model, DSMC, rarefied gas, pulsed laser evaporation, LasInEx, Nesvetay.
Funding agency Grant number
Russian Science Foundation 22-11-00078
This work was supported by the Russian Science Foundation, project no. 22-11-00078.
Received: 23.06.2023
Revised: 05.07.2023
Accepted: 22.08.2023
English version:
Computational Mathematics and Mathematical Physics, 2023, Volume 63, Issue 12, Pages 2244–2256
DOI: https://doi.org/10.1134/S0965542523120151
Bibliographic databases:
Document Type: Article
UDC: 519.635
Language: Russian
Citation: A. A. Morozov, V. A. Titarev, “Evolution of the shape of a gas cloud during pulsed laser evaporation into vacuum: Direct simulation Monte Carlo and the solution of a model equation”, Zh. Vychisl. Mat. Mat. Fiz., 63:12 (2023), 1960–1972; Comput. Math. Math. Phys., 63:12 (2023), 2244–2256
Citation in format AMSBIB
\Bibitem{MorTit23}
\by A.~A.~Morozov, V.~A.~Titarev
\paper Evolution of the shape of a gas cloud during pulsed laser evaporation into vacuum: Direct simulation Monte Carlo and the solution of a model equation
\jour Zh. Vychisl. Mat. Mat. Fiz.
\yr 2023
\vol 63
\issue 12
\pages 1960--1972
\mathnet{http://mi.mathnet.ru/zvmmf11663}
\crossref{https://doi.org/10.31857/S0044466923120207}
\elib{https://elibrary.ru/item.asp?id=54912953}
\transl
\jour Comput. Math. Math. Phys.
\yr 2023
\vol 63
\issue 12
\pages 2244--2256
\crossref{https://doi.org/10.1134/S0965542523120151}
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