Heat transfer and phase transitions of water in
multi-layer cryolithozone-surface systems
I.L. Khabibullin, G.A. Nigametyanova, and F.F.
Nazmutdinov
Bashkir State University, Ufa, Russia
E-mail: habibi.bsu@mail.ru, gyzelua@mail.ru
Keywords: permafrost zone, permafrost, land cover, thermo-insulating layer, heat transfer, tem-perature distribution, soil freezing and thawing
Abstract
A
mathematical model for calculating the distribution of temperature and the
dynamics of the phase transformations of water in multilayer systems on
permafrost-zone surface is proposed. The model allows one to perform
calculations in the annual cycle, taking into account the distribution of
temperature on the surface in warm and cold seasons. A system involving four
layers, a snow or land cover, a top layer of soil, a layer of
thermal-insulation material, and a mineral soil, is analyzed. The
calculations by the model allow one to choose the optimal thickness and composition
of the layers which would ensure the stability of structures built on the
permafrost-zone surface.
DOI: 10.1134/S0869864318010092
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