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This article is cited in 4 scientific papers (total in 4 papers)
INFORMATICS
Mathematical modeling of melting tungsten exposed to pulsed laser beam
G. G. Lazarevaa, A. S. Arakcheevb, V. A. Popovb a Peoples’ Friendship University of Russia, Moscow, Russia
b Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Abstract:
Melting in a tungsten plate exposed to a pulsed thermal load is numerically simulated by solving the two-phase Stefan problem. The free boundary is ignored during the calculation, since the numerical model is based on Samarskii’s approach. Calculations in axially symmetric geometry show that about a quarter of the incident energy is consumed by evaporation in the center of the melt region. This is five times more than estimates based on the solution of the one-dimensional heat equation. When tungsten evaporation is taken into account, the calculated and experimental cooling surface temperatures and radii of the melt region are in good agreement. The results of the mathematical modeling confirm the existence of an evaporation cooling mode when the tungsten is heated by an electron beam to temperatures significantly higher than the melting point.
Keywords:
mathematical modeling, tungsten evaporation, Stefan’s problem.
Received: 04.09.2022 Revised: 24.10.2022 Accepted: 26.12.2022
Citation:
G. G. Lazareva, A. S. Arakcheev, V. A. Popov, “Mathematical modeling of melting tungsten exposed to pulsed laser beam”, Dokl. RAN. Math. Inf. Proc. Upr., 509 (2023), 101–105; Dokl. Math., 107:1 (2023), 83–87
Linking options:
https://www.mathnet.ru/eng/danma369 https://www.mathnet.ru/eng/danma/v509/p101
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