MODEL OF A THERMALLY INDUCED LIQUID INCLUSION MIGRATION IN A SINGLE CRYSTAL OF HALITES UNDER A HOMOGENEOUS TEMPERATURE GRADIENT FIELD

The paper focuses on an evolution model developed for a liquid inclusion in halites under a temperature gradient field, taking into account surface phenomena. To demonstrate the safety of heat-generating radioactive waste disposal in salt rocks (halites), thermally induced migration of liquid inclusions should be studied. Based on the study, a software package was developed providing numerical implementation of this model. The diffusion equation with initial and boundary conditions was approximated via the finite element method on triangular unstructured mobile grids. In case of weak formulation, the equations were discretized and solved in the FEniCS software. The study showed good agreement between the calculations and the experimental data.

Keywords: radioactive waste, temperature gradient, thermomigration, halites, liquid inclusions, chemical potential difference.

Avetisyan A. R., Korchagina O. O., Matveev L. V. Model of a Thermally Induced Liquid Inclusion Migration in a Single Crystal of Halites under a Homogeneous Temperature Gradient Field. Radioactive Waste, 2022, no. 2 (19), pp. 100—104. DOI: 10.25283/2587-9707-2022-2-100-104. (In Russian).