Heat-force bidirectional coupling simulation method for mixed tower structure in extremely cold environment with large temperature difference

By establishing a thermo-mechanical two-way coupled simulation method for hybrid tower structures under extremely cold and large temperature difference environments, the problem of inaccurate simulation of hybrid tower structures under extremely cold environments is solved, and high-precision simultaneous solution of temperature and stress fields is achieved, thereby improving the accuracy of structural safety assessment.

CN122452206APending Publication Date: 2026-07-24HUANENG ANDA CITY CLEAN ENERGY CO LTD +1
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Patent Information

Application Number
CN202610310503.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-13
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing finite element analysis of temperature stress in hybrid tower structures suffers from inaccurate simulations under extremely cold and large temperature difference environments. This includes insufficient dynamics of solar radiation loading, failure to consider gradient wind speed distribution, and failure to reflect the interaction between temperature and structural deformation, which affects the accuracy of structural safety and durability assessments.

Method used

A thermo-mechanical two-way coupled simulation method for hybrid tower structures under extremely cold and large temperature difference environments is adopted. By establishing a finite element analysis model and setting dynamic thermal boundary conditions, the temperature field and the structural stress-strain field are solved simultaneously. The dynamic loading of solar radiation and wind speed gradient distribution are considered to construct a high-precision dynamic environmental boundary model.

Benefits of technology

It achieves high-precision response prediction of hybrid tower structures under extreme temperature environments, improves the accuracy of structural safety assessment, captures the reaction of structural deformation to the heat transfer process, and accurately simulates the heat conduction path and stress distribution.

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Abstract

The invention discloses a heat-force bidirectional coupling simulation method for a mixed tower structure in an extremely cold large-temperature-difference environment. The method comprises the following steps: establishing a mixed tower finite element analysis model; constructing a temperature-displacement analysis step sequence of complete thermal coupling; thermal boundary conditions dynamically changing along with time and height are set on the outer surface of the model, dynamic surface heat flow loading of solar radiation and gradient distribution calculation of convective heat transfer coefficients are achieved through a user subprogram, meanwhile, surface radiation conditions are set, and effective sky temperature and emissivity are defined; the temperature field and the structural stress-strain field are solved synchronously, bidirectional real-time interaction between the temperature and structural deformation is achieved, and the stress distribution and the deformation state of the mixed tower structure in the extreme temperature environment are obtained. According to the embodiment of the invention, the bidirectional real-time coupling solution of the temperature field and the structural stress-displacement field is realized, the temperature gradient distribution and thermal-mechanical coupling response of the mixed tower structure in the extremely cold large-temperature-difference environment can be accurately simulated, and the deviation between the calculation result and the field test measured value is low.
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