Research output: Contribution to journal › Conference article › peer-review
Numerical model of high-power transient heating of tungsten with considering of various erosion effects. / Lazareva, G. G.; Arakcheev, A. S.; Burdakov, A. V. et al.
In: Journal of Physics: Conference Series, Vol. 1103, No. 1, 012001, 15.10.2018.Research output: Contribution to journal › Conference article › peer-review
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TY - JOUR
T1 - Numerical model of high-power transient heating of tungsten with considering of various erosion effects
AU - Lazareva, G. G.
AU - Arakcheev, A. S.
AU - Burdakov, A. V.
AU - Kandaurov, I. V.
AU - Kasatov, A. A.
AU - Kurkuchekov, V. V.
AU - Maksimova, A. G.
AU - Popov, V. A.
AU - Shoshin, A. A.
AU - Snytnikov, A. V.
AU - Trunev, Yu A.
AU - Vasilyev, A. A.
AU - Vyacheslavov, L. N.
N1 - Publisher Copyright: © 2018 Institute of Physics Publishing. All rights reserved.
PY - 2018/10/15
Y1 - 2018/10/15
N2 - Surface melting of tungsten under exposure to a pulsed electron beam was simulated numerically, the evaporation process taken into account. The calculation is based on the experimental time dependence of the total beam power. The model of the tungsten heating process is based on solving the two-phase Stefan problem. The position of the phase boundary depends on discontinuous time-and space-nonlinear coefficients and boundary conditions. The aim of the study is to provide a detailed resolution of the heat flow deep into the material with a fine spatial grid step. As compared with the size of the tungsten plate, the heating depth is very small. The problem statement under consideration is multiscale. Further expansion of the model involves taking into account microcracks. Micro-cracks occur during the cooling process after exposure and affect the temperature of the tungsten surface during the subsequent heating process. The article presents a modeling of cracks of different geometries typical for this process. The results of the calculations correlate with the experimental data obtained on the experimental test facility BETA at BINP SB RAS.
AB - Surface melting of tungsten under exposure to a pulsed electron beam was simulated numerically, the evaporation process taken into account. The calculation is based on the experimental time dependence of the total beam power. The model of the tungsten heating process is based on solving the two-phase Stefan problem. The position of the phase boundary depends on discontinuous time-and space-nonlinear coefficients and boundary conditions. The aim of the study is to provide a detailed resolution of the heat flow deep into the material with a fine spatial grid step. As compared with the size of the tungsten plate, the heating depth is very small. The problem statement under consideration is multiscale. Further expansion of the model involves taking into account microcracks. Micro-cracks occur during the cooling process after exposure and affect the temperature of the tungsten surface during the subsequent heating process. The article presents a modeling of cracks of different geometries typical for this process. The results of the calculations correlate with the experimental data obtained on the experimental test facility BETA at BINP SB RAS.
UR - http://www.scopus.com/inward/record.url?scp=85056416070&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1103/1/012001
DO - 10.1088/1742-6596/1103/1/012001
M3 - Conference article
AN - SCOPUS:85056416070
VL - 1103
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012001
T2 - Workshop on Numerical Modeling in MHD and Plasma Physics: Methods, Tools, and Outcomes. Honor of academician Anatoly Alekseev's 90th Birthday
Y2 - 11 October 2018 through 12 October 2018
ER -
ID: 17414788