Calculating the thermal interaction of different structures with permanently frozen grounds at the base

About the authors:

Sergey S. Primakov, Cand. Sci. (Tech.), Head of Department of Permafrost Soil, Novatek-STC (Tyumen); primakovss@yandex.ru

Lyudmila A. Puldas, Cand. Sci. (Tech.), Associate Professor, Heatgas Supply and Ventilation Department, Industrial University of Tyumen; eLibrary AuthorID, puldasla@tyuiu.ru

Igor V. Zabora, Assistant, Department of Applied and Technical Physics, University of Tyumen; zaboraiv@yandex.ru

Abstract:

Numerical modeling is widely applied for performance of heattechnical calculations for definition of heatpower interaction of constructions with permafrost soil. The known advantage of numerical modeling is an opportunity to consider pronounced inhomogeneity of soil in depth, a difficult thermal operating mode of constructions and a combination of various conditions of heat exchange on a surface. However, a lack of such difficult numerical model is first the question of correctness of its construction and results of modeling.

This article studies the problem of determination of reliability of numerical geocryologic model. Tasks of determination of criteria of reliability of mathematical model and of development of a technique which use allows defining reliability of such model are set.

The authors present the solution of these tasks, providing a concept of space-time characteristic of geocryologic conditions, the complex of criteria of reliability of numerical geocryologic model. They have also developed the technique and its application, which speaks for the reliability of numerical geocryologic model.

References:

1. Vasilyev V. I., Vasilyeva M. V., Sirditov I. K., Stepanov S. P., Tseeva A. N. 2017. “Mathematical modeling of temperature condition of soil of foundations of the bases in the conditions of permafrost breeds”. Vestnik Moskovskogo gosudarstvennogo tekhnicheskogo universiteta im. N. E. Baumana. Seriya: Estestvennyye nauki, no 1 (70), pp. 142-159. DOI: 10.18698/1812-3368-2017-1-142-159 [In Russian]
2. Vasilyev V. I., Popov V. V. 2008. “Numerical solution of a problem of frost penetration in soil”. Mathematical Models and Computer Simulations, vol. 20, no 7, pp. 119-128. [In Russian]
3. GOST 25358-2012. 2013. Soil. Method of Field Determination of Temperature. Moscow: Standartinform. [In Russian]
4. Krylov D. A., Fedotov A. A. 2013. “Temperature condition of permafrost soil under the building with the pile base”. Vestnik Moskovskogo gosudarstvennogo tekhnicheskogo universiteta im. N. E. Baumana. Seriya: Estestvennyye nauki, no 3 (50), pp. 106-116. [In Russian]
5. Primakov S. S., Zabora I. V., Arinshteyn E. A., Tatosov A. V. 2017. “The influence of the dynamics of temperature distribution of permafrost soils on assessing the foundations’ reliability on the example of a seasonal change in the bearing capacity of poles”. Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy, vol. 3, no 4, pp. 41-50. DOI: 10.21684/2411-7978-2017-3-4-41-50 [In Russian]
6. RD 39-R-088-91. 1991. Instruction for definition of temperature condition of permafrost and discontinuous permafrost soils and for forecasting the consequences of surface thermal conditions’ changes. USSR Ministry of the Oil and Gas Industry. [In Russian]
7. RSN 67-87. 1987. Engineering researches for construction. Forecasting the measurements of temperature condition of permafrost soil by numerical methods. Moscow: Gosstroy RSFSR. [In Russian]
8. Working Document SP 25.13330.2012. 2008. Construction Regulations. Basements and Foundations on Permafrost. Moscow: Minregionrazvitiya. [In Russian]