Determination of convective heat transfer coefficient for the internal surfaces of concrete box girders using computational fluid dynamics simulation
Email:
bttmai@utc.edu.vn
Từ khóa:
Convective heat transfer coefficient, internal surfaces, concrete box girders, computational fluid dynamics, heat transfer in fluids
Tóm tắt
The convective heat transfer coefficient (hc) is a key parameter in heat transfer analysis and the thermal behavior of concrete structures. For the internal surfaces of enclosed structures, hc is typically determined under the assumption of zero air velocity. In the case of concrete box girders, empirical formulas have traditionally been used to estimate this coefficient. However, inside the box of a concrete box girder, temperature differences between the internal surfaces can drive air movement, which may affect hc. This paper presents the method and results of determining hc for the internal surfaces of concrete box girder bridges using computational fluid dynamics (CFD) simulation, coupling fluid flow with heat transfer. The numerical model was validated against benchmark experimental data and field-measured temperatures from six full-scale bridge cross-sections. The results show that the average hc ranges from approximately 3.71 to 4.90 W·m⁻²·K⁻¹ and varies with cross-sectional geometry, rather than remaining constant as assumed in conventional empirical approaches. Smaller and more square-like sections generally exhibit higher hc values. These findings provide more reliable reference values for thermal analysis of concrete box girder bridges.Tài liệu tham khảo
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[2]. T. T. Tung, Evaluation of the effectiveness of cantilever construction technology for large-span prestressed reinforced concrete bridges in Vietnam and proposal for improvement solutions, Report on research results of a MOT project, Code: DT183057, 2019. (in Vietnamese).
[3]. J. H. Lienhard, A Heat Transfer Textbook, fifth ed., Courier Dover Publications, 2019.
[4]. J. P. Holman, Heat Transfer, tenth ed., McGraw-Hill, 2010.
[5]. D. N. Quang, H. N. Cuong, Determination of convective heat transfer coefficients for exterior surfaces of concrete bridge box girders using CFD conjugate heat transfer simulation, Transport and Communications Science Journal, 76 (2025) 333-347. https://doi.org/10.47869/tcsj.76.3.11
[6]. M. M. Elbadry, A. Ghali, Temperature variations in concrete bridges, Journal of Structural Engineering, 109 (1983) 2355-2374. https://doi.org/10.1061/(ASCE)0733-9445(1983)109:10(2355)
[7]. D. N. Quang, Determining the convective heat transfer coefficient of inside surfaces of concrete box bridge girders, Journal of Construction, 6 (2025). (in Vietnamese).
[8]. H. Montazeri, B. Blocken, D. Derome, J. Carmeliet, J. L. M. Hensen, CFD analysis of forced convective heat transfer coefficients at windward building facades: Influence of building geometry, Journal of Wind Engineering and Industrial Aerodynamics, 146, 102-116. https://doi.org/10.1016/j.jweia.2015.07.007
[9]. M. T. Kahsay, G. T. Bitsuamlak, F. Tariku, CFD simulation of external CHTC on a high-rise building with and without façade appurtenances, Building and Environment, 165 (2019) 106350. https://doi.org/10.1016/j.buildenv.2019.106350
[10]. S. R. Delaforce, E. R. Hitchin, D. M. T. Watson, Convective heat transfer at internal surfaces, Building and Environment, 28 (1993) 211-220. https://doi.org/10.1016/0360-1323(93)90054-7
[11]. G. V. Kuznetsov, A. E. Nee, Conduction, convection, and radiation in a closed cavity with a local radiant heater, Frontiers in Heat and Mass Transfer, 10 (2018) 1-9. https://doi.org/10.5098/hmt.10.26
[12]. A. Bejan, Convective Heat Transfer, John Wiley & Sons, Inc., 2013.
[13]. H. B. Awbi, A. Hatton, Natural convection from heated room surfaces, Energy and Buildings, 30 (1999) 233-244.
[14]. Y. S. Tian, T. G. Karayiannis, Low turbulence natural convection in an air filled square cavity Part I: The thermal and fluid flow fields, International Journal of Heat and Mass Transfer, 43 (2000) 849-866.
[15]. Y. S. Tian, T. G. Karayiannis, Low turbulence natural convection in an air filled square cavity Part II: The turbulence quantities, International Journal of Heat and Mass Transfer, 43 (2000) 867-884.
[16]. N. D. Quang, Final Report on the Research Project: Investigation into Temperature Distribution in Reinforced Concrete Box Girder Highway Bridges, DT214005, 2022. (in Vietnamese).
Tải xuống
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Nhận bài
02/06/2026
Nhận bài sửa
20/08/2026
Chấp nhận đăng
07/09/2026
Xuất bản
15/09/2026
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Kiểu trích dẫn
Ngo Dang, Q., & Bui Thi Thanh, M. (1789405200). Determination of convective heat transfer coefficient for the internal surfaces of concrete box girders using computational fluid dynamics simulation. Tạp Chí Khoa Học Giao Thông Vận Tải, 77(7), 899-913. https://doi.org/10.47869/tcsj.77.7.2
