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Updated: May 14, 2025

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns
Published on: April 10, 2017
Optimizing dome curvature boost heat transfer in concrete curing kiln
Fengwei Liu1, Anjiang Cai1, Wenlong Luo2
1School of Mechanical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Abstract:
Conventional flat-top precast concrete curing kilns suffer from uneven temperature distribution, affecting production quality. This study introduced a curvature-varying dome curve (CVDC) to optimize the airflow dynamics. Numerical simulations evaluated the effects of different curvature coefficients (K = 0, 0.25, 0.5, 0.75, and 1) on temperature distribution, thermal properties, and entropy generation under actual curing conditions. The results show that the CVDC design significantly improves the internal air circulation and heat transfer efficiency while minimizing kinetic energy losses. Specifically, when the curvature coefficient is K = 0.5, the average Nusselt number increases by 67.02%, the dissipated entropy generation decreases by 74.13%, and the uniformity of temperature distribution improves by 28.57% compared with the conventional flat ceiling structure. These findings provide practical guidance for optimizing the ceiling structure of curing kilns, offering great potential for improving energy efficiency in precast concrete manufacturing.
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