| UDC 519.63 : 551.345 |
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Determining Boundary Conditions in Modeling the Thermal Regime of Frozen Soils |
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| © 2018 P. P. Permyakov1,2, T. A. Afanasyeva1, S. P. Varlamov1, P. N. Skryabin1 |
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1Melnikov Permafrost Institute SB RAS, Yakutsk
2V. P. Larionov Institute of Physical and Technical Problems of the North SB RAS, Yakutsk |
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| A new algorithm for determining the heat flow density on the soil surface is proposed; the realistic numerical modeling of the soil thermal regime is accomplished through improving the boundary conditions. The paper shows the efficiency of the algorithm for computational model problems with an exact solution. The dependence of determining the heat flow density for accurate input temperature values on different initial approximations of the desired parameters and on temperature sensor locations at different depths is considered. The heat flow density on the natural and exposed experimental sites has been determined. The suggested algorithm is recommended to determine the heat flow density in modeling the thermal state of frozen soils. |
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| Keywords: frozen soils, soil temperature, inverse heat conduction problem, heat flow. |
| Full text [In Russian] |
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