Numerical Study on the Surface Convective Heat Transfer of Mass Concrete Structure

Abstract:

The surface convective heat transfer of mass concrete is an important element of concrete structure temperature effect analysis. Based on coupled Thermal Fluid governing differential equation and finite element method, the paper calculated and analyzed the dependence of the concrete surface convective heat transfer on the air flow velocity and the concrete thermal conductivity coefficient. Results show that the surface convective heat transfer coefficient of concrete is a quadratic polynomial function of the air flow velocity, but influenced much less by the air flow velocity when temperature gradient is dominating in heat transfer. The concrete surface convective heat transfer coefficient increases linearly with the thermal conductivity of concrete increases.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 992-995
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.992
• Online since: January 2015
• Authors: Biao Li, Fu Guo Tong*, Chang Liu, Nian Nian Xi
• Keywords: Finite Element Method (FEM), Mass Concrete, Surface Convective Heat Transfer Coefficient

References

[1] Jianyong Zhang, Zhaoqiu Liu: China Civil Engineering Journal Vol. 39 (2006), P. 39-43. In Chinese.

[2] Bofang Zhu: Thermal stresses and temperature control of mass concrete (China Electric Power Press, China 1998).

[3] Zhihong Zhao: Computer and Geotechnics Vol. 59 (2014), P. 105-111.

[4] D.S.P. Rao: ACI Journal Vol. 83 (1986), P. 588-596.

[5] Zichner: Journal of Structural Engineering Vol. 118 (1992), P. 1090-1105.

[6] Rohsenow W.M.: Handbook of heat transfer fundamentals (Science Press, China 1992).

[7] Yun Lee: Cement &Concrete Composites Vol. 31 (2009) P. 60-71.

[8] Wenquan Tao: Heat transfer (Northwestern Polytechnical University Press, China 2006).