The authors proposes a method for creating a computational model for performing thermal engineering calculations, which makes it possible to take into account the complex relief morphology, the mutual arrangement of engineering-geological elements under the condition of inhomogeneous spatial occurrence and uneven temperature distribution, taking into account the complex relief of the computational model. The correct consideration of the described parameters in the process of performing predictive heat engineering calculations requires software that allows performing mathematical modeling of the dynamics of changes in the temperature distribution in permafrost soils. The article presents a comparative analysis of computational domains built using the methodology described in certified software using standard tools and the approach proposed by the authors. Based on the results of the analysis, the substantiation of the presented methodology for creating a calculation model and performing predictive heat engineering calculations was obtained. The method described allows with great accuracy: to take into account the relative position of engineering-geological layers in the calculation model, to fix the boundary between thawed and frozen soils, to perform linear interpolation of the temperature distribution between engineering-geological wells. Performing predictive heat engineering calculations in accordance with the proposed methodology will significantly improve the accuracy of the results of predictive heat engineering calculations and, as a result, facilitate the process of choosing the most effective technical solutions that ensure the safe operation of structures located in permafrost conditions. The introducing the proposed methodology into calculation software systems will significantly speed up the process of preparing calculation models and reduce the time for performing predictive heat engineering calculations.
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