Numerical modeling of the formation of D-T mixture spherical layer in micro-targets of LTS-Reference-Cited by-同舟云学术

Numerical modeling of the formation of D-T mixture spherical layer in micro-targets of LTS

Published:2021-12-30 Issue:4 Volume:23 Page:394-411
ISSN:2079-6900
Container-title:Zhurnal Srednevolzhskogo Matematicheskogo Obshchestva
language:
Short-container-title:Zhurnal SVMO

Author:

Kireicheva Ekaterina Yu.¹^ORCID,Veselova Elena A.¹^ORCID,Mamedova Tatyana F.¹^ORCID

Affiliation:

1. Russian Federal Nuclear Center

Abstract

The article presents a two-dimensional economical computational model of the formation of D-T mixture cryogenic layer in a spherical shell. The model is based on the description of the motion of the gas phase in the Boussinesq approximation. The thermal problem is a Stefan problem with a gas-solid phase transition. The technique is based on the finite volume method, the use of a structured mobile grid, whose movement is associated with the separation of the phase front, implicit approximations and the method of splitting two-dimensional equations in directions into one-dimensional equations. It is numerically shown that, due to natural radioactivity, the target is symmetrized. A calculated estimation of the symmetrization time for one geometry of the target with different filling coefficients is carried out.

Publisher

National Research Mordovia State University MRSU

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