TY  - EJOU
AU  - Gong, Linhui 
AU  - Wu, Jie 
AU  - Shen, Lei 
AU  - Wang, Jinlong 
AU  - Yin, Hao 
AU  - Luzio, Giovanni Di 
AU  - Cao, Maosen 

TI  - Mesh-Independent Water Pipe Cooling Method and Local Thermal Non-Equilibrium Effect in Mass Concrete Temperature Control Simulation
T2  - Structural Durability \& Health Monitoring

PY  - 
VL  - 
IS  - 
SN  - 1930-2991

AB  - Pipe cooling is a primary method for temperature control in mass concrete construction. The optimization of cooling pipe layout in practical engineering calls for the development of new simulation methods that combine computational accuracy with efficiency. This study presents a mesh-independent method for thermal analysis of pipe cooling in mass concrete structures. Two energy balance equations are established for the water pipe, modeled using lattice elements, and for the concrete, modeled with hexahedral solid elements. The local thermal non-equilibrium (LTNE) effect is captured through heat exchange between the two domains, facilitated by spatial topological mapping. Compared with experimental data and conventional simulations, the proposed method eliminates the need for remeshing the concrete domain when the pipe layout is altered, while maintaining a high level of computational accuracy and efficiency. The temperature difference caused by LTNE effect and daily pipe flow reversal significantly increases early-age cracking risk.
KW  - Mass concrete; water pipe cooling; mesh independence; spatial topological mapping; local thermal non-equilibrium

DO  - 10.32604/sdhm.2026.083844