Numerical simulation of tungsten melting under fusion reactor-relevant high-power pulsed heating

Galina G. Lazareva, Aleksey S. Arakcheev, Aleksey A. Vasilyev, Anastasia G. Maksimova

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

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 nonlinear coefficients. 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 gas dynamics equations to simulate the dynamics of the liquid and gaseous phases of the metal. Two approaches to solving the equation for temperature are considered: the implicit run method and the explicitly solvable Konovalov-Popov model. The results of calculations correlate with the experimental data obtained at the experimental stand Beam of Electrons for materials Test Applications (BETA) at Budker Institute of Nuclear Physics (BINP) of the SB RAS.

Язык оригиналаанглийский
Название основной публикацииSmart Modeling for Engineering Systems - Proceedings of the Conference 50 Years of the Development of Grid-Characteristic Method
РедакторыAlena V. Favorskaya, Lakhmi C. Jain, Margarita N. Favorskaya, Sergey S. Simakov, Lakhmi C. Jain, Lakhmi C. Jain, Igor B. Petrov, Lakhmi C. Jain
ИздательSpringer Science and Business Media Deutschland GmbH
Страницы41-51
Число страниц11
ISBN (печатное издание)9783030062279
DOI
СостояниеОпубликовано - 1 янв 2019
СобытиеInternational Conference on 50 years of the development of grid-characteristic method, GCM50 2018 - Moscow, Российская Федерация
Продолжительность: 31 мар 20183 апр 2018

Серия публикаций

НазваниеSmart Innovation, Systems and Technologies
Том133
ISSN (печатное издание)2190-3018
ISSN (электронное издание)2190-3026

Конференция

КонференцияInternational Conference on 50 years of the development of grid-characteristic method, GCM50 2018
СтранаРоссийская Федерация
ГородMoscow
Период31.03.201803.04.2018

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