Modeling the Piped Water Cooling of a Concrete Dam Using the Heat-Fluid Coupling Method
Publication: Journal of Engineering Mechanics
Volume 139, Issue 9
Abstract
Thermal analysis is one of the main components in the design and construction of roller-compacted concrete dams. In this article, the heat-fluid coupling method is introduced to perform the thermal analysis of a pipe cooling system in mass concrete structures. Several typical models and examples are selected to verify the performance of this method. The proposed method is then applied to a roller-compacted concrete gravity dam called the Guandi Dam, which is still under construction in China. The actual climatic conditions and thermal properties of the materials are considered in this analysis. The temperatures determined by numerical simulation are in good agreement with the actual monitored values. The simulation results indicate that the proposed method can accurately simulate the cooling pipe state, the temperature rise along the water flow, and the effect of directional changes of flow in temperature distributions. Moreover, cracking is shown to more likely develop in concrete near the cooling pipes, mainly from the extreme temperature gradient and fluctuation during the cooling process of concrete. The untimely application of water cooling systems during hot seasons will induce extreme tensile stresses and increase the risk of cracking.
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Acknowledgments
This work was sponsored by the National Science Fund for Distinguished Young Scholars of China (No. 50725931) and the National Natural Science Foundation of China (No. 50909078).
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 139 • Issue 9 • September 2013
Pages: 1278 - 1289
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Apr 29, 2011
Accepted: Aug 20, 2012
Published online: Aug 29, 2012
Published in print: Sep 1, 2013
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