Thermal Analysis of Concrete Structures with Pipe-Cooling System by a New Algorithm

Abstract:

In this paper, we proposed a new algorithm to calculate the temperature field of concrete structures with pipe-cooling system. As we know, the pretreatment of pipe model is hard and the calculation will be time-consuming. However, in this algorithm, the computing information of pipes will be included in the exist nodes of elements, so the workload of pretreatment would be reduced. Meanwhile, the finite element method (FEM) format and the formula of water temperature along pipe have been established in this paper. Iteration was not required in this method, so the computing speed will be improved too. An example has shown that this algorithm can response temperature gradient near the pipe and have good efficiency to calculate temperature field of concrete structures with pipe-cooling system.

• Periodical: Applied Mechanics and Materials (Volume 724)
• Pages: 161-165
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.724.161
• Online since: January 2015
• Authors: You Ping Zhu*, Shu Rong Feng, Qing Chun Shi, Jun An Su
• Keywords: Algorithm, Pipe-Cooling, Temperature Field

References

[1] LIU Xiao-qing, LI Tong-chun, Han Bo. Direct algorithm for simulating cooling effect of water pipes in concrete. J Hydraul Eng, 2009; 40(7): 892-896.

[2] CAI Jian-bo. Analysis of unsteady plane temperature field with cooling pipe by means of hybrid element method. J Hydraul Eng, 1984; 5: 18-25.

[3] Zhu Bo-fang. Equivalent of heat conduction in mass concrete considering the effect of pipe cooling. J Hydraul Eng, 1991; 3: 28-34.

[4] ZHU Bo-fang. Equivalent heat conduction equation of pipe cooling in mass concrete considering influence of external temperature. J Hydraul Eng, 2003; 3: 49-54.

[5] Zhu Bo-fang, Cai Jianbo. Finite Element analysis of the effect of pipe cooling in concrete dams. J Hydraul Eng, 1985; 4: 27-36.

[6] Mai Jia-xuan. A combined method of theoretic and numerical solution for pipe cooling in concrete dams. J Hydraul Eng. 1998; 4: 31-41.

[7] Zhu Yue-ming, Xu Zhi-qing etal. A calculation method for solving temperature field of mass concrete with cooling pipes. J Yangtze River Sci Research Institute, 2003; 2: 19-22.

[8] Liu Ning, Liu Guang-ting. Sub-structural FEM for the thermal effect of cooling pipes in mass concrete structures. J Hydraul Eng, 1997; 2: 43-49.

[9] SU Pei-fang, CHEN Sheng-hong, Tian Tian. Preliminary Research on composite element algorithm for the concrete containing cooling pipes. J Wuhan Univ Technol. 2010; 12: 48-53.

[10] Jin Keun Kim. Thermal Analysis of Hydra ion Heat in Concrete Structures with Pipe-cooling System. Comput Struct, 2001; 79: 163-171.

[11] BOFANG ZHU. Thermal stress and temperature control of mass concrete. Chin Elec Power press, (1998).

[12] J.P. Holman. Heat Transfer. Chin Mach Press. (2005).