Influence of Boundary Conditions on the Three-Dimensional Temperature Field of a Box Girder in the Natural Environment: A Case Study
Abstract
:1. Introduction
2. Boundary Conditions for Solar Radiation
2.1. Solar Constant
2.2. Cape of the Sun
2.2.1. Angle of Declination δ
2.2.2. Solar Time Angle ω
2.2.3. Solar Altitude Angle h
2.2.4. Solar Azimuth γz
2.2.5. Solar Incidence Angle θ
2.3. Boundary of Solar Radiation Intensity
2.3.1. Direct Solar Radiation
2.3.2. Atmospheric Scattering Radiation
2.3.3. Surface-Reflected Radiation
3. Boundary of Convective Heat Transfer
4. Boundary of Radiative Heat Transfer
4.1. Environmental Radiation
4.2. Structural Exothermic Radiation
5. Engineering Background and Verification
5.1. Engineering Background
5.2. Validation of Results
6. Influence of Boundary Condition Parameters on the Temperature Field Distribution
6.1. Impact of Atmospheric Transparency
6.2. Influence of Short-Wave Absorptivity in Concrete
7. Discussion
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Day/Month | Maximum Temperature | Minimum Temperature | Atmospheric Sine Function |
---|---|---|---|
27/12 | 6 | −1 | |
28/12 | 9 | −1 | |
29/12 | 9 | −4 | |
30/12 | 12 | −3 | |
31/12 | 14 | 0 | |
1/1 | 17 | 0 | |
2/1 | 19 | 0 |
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Yan, B.; Fu, H.; Su, H.; Hou, B. Influence of Boundary Conditions on the Three-Dimensional Temperature Field of a Box Girder in the Natural Environment: A Case Study. Appl. Sci. 2025, 15, 1378. https://doi.org/10.3390/app15031378
Yan B, Fu H, Su H, Hou B. Influence of Boundary Conditions on the Three-Dimensional Temperature Field of a Box Girder in the Natural Environment: A Case Study. Applied Sciences. 2025; 15(3):1378. https://doi.org/10.3390/app15031378
Chicago/Turabian StyleYan, Bin, Hexin Fu, Haiting Su, and Benguang Hou. 2025. "Influence of Boundary Conditions on the Three-Dimensional Temperature Field of a Box Girder in the Natural Environment: A Case Study" Applied Sciences 15, no. 3: 1378. https://doi.org/10.3390/app15031378
APA StyleYan, B., Fu, H., Su, H., & Hou, B. (2025). Influence of Boundary Conditions on the Three-Dimensional Temperature Field of a Box Girder in the Natural Environment: A Case Study. Applied Sciences, 15(3), 1378. https://doi.org/10.3390/app15031378