RECOVERY OF BOUNDARY CONDITIONS FOR MODELING THE HEAT EXCHANGE ON THE SURFACE OF THE GROUND
Abstract
Evaluating the thermal state of frozen soils under climate change and technogenesis is an important task in geocryology. Disturbance to the natural environment lead to changes in geocryological conditions that threat the stability of engineering structures. In this paper, we consider the recovery of the boundary conditions for heat exchange on the surface of the ground, where numerical simulation of the process of freezing and thawing of frozen soils requires initial data, both initial and boundary conditions. The correct choice of the initial heat transfer data increases the reliability of the calculations. The heat flux density is determined on natural and bare experimental sites. In the course of numerical studies, it has been established that the recovery process is highly dependent on the height of the snow cover and the ambient temperature. It is recommended to use the proposed algorithm for determining the heat flux density in modeling the thermal state of frozen soils.
About the Authors
Petr Permyakov
Melnikov Permafrost Institute, Siberian Branch, Russian Academy of Sciences
Russian Federation
Russian Federation
Tatyana Afanasyeva
Melnikov Permafrost Institute, Siberian Branch, Russian Academy of Sciences
Russian Federation
Russian Federation
Stepan Varlamov
Melnikov Permafrost Institute, Siberian Branch, Russian Academy of Sciences
Russian Federation
Russian Federation
Pavel Skryabin
Melnikov Permafrost Institute, Siberian Branch, Russian Academy of Sciences
Russian Federation
Russian Federation
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Review
For citations:
Permyakov P., Afanasyeva T., Varlamov S., Skryabin P. RECOVERY OF BOUNDARY CONDITIONS FOR MODELING THE HEAT EXCHANGE ON THE SURFACE OF THE GROUND. Arctic XXI Сentury. 2019;(1):27-35. (In Russ.)
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