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

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationSmart Modeling for Engineering Systems - Proceedings of the Conference 50 Years of the Development of Grid-Characteristic Method
EditorsAlena V. Favorskaya, Lakhmi C. Jain, Margarita N. Favorskaya, Sergey S. Simakov, Lakhmi C. Jain, Lakhmi C. Jain, Igor B. Petrov, Lakhmi C. Jain
PublisherSpringer Science and Business Media Deutschland GmbH
Pages41-51
Number of pages11
ISBN (Print)9783030062279
DOIs
Publication statusPublished - 1 Jan 2019
EventInternational Conference on 50 years of the development of grid-characteristic method, GCM50 2018 - Moscow, Russian Federation
Duration: 31 Mar 20183 Apr 2018

Publication series

NameSmart Innovation, Systems and Technologies
Volume133
ISSN (Print)2190-3018
ISSN (Electronic)2190-3026

Conference

ConferenceInternational Conference on 50 years of the development of grid-characteristic method, GCM50 2018
CountryRussian Federation
CityMoscow
Period31.03.201803.04.2018

Keywords

  • Melting
  • Numerical simulation
  • Pulsed heating

Fingerprint Dive into the research topics of 'Numerical simulation of tungsten melting under fusion reactor-relevant high-power pulsed heating'. Together they form a unique fingerprint.

Cite this