西安理工大学学报2017，Vol.33Issue(3)：270-275,6.DOI:10.19322/j.cnki.issn.1006-4710.2017.03.004
基于热流耦合算法的大体积混凝土水管冷却仿真分析
Simulation analysis of mass concrete with cooling pipes based on heat-fluid coupling method
摘要
Abstract
Pipe cooling is the most effective and widely used temperature control and crack prevention measures for mass concrete,with pipe parameters having a significant effect on the cooling effect.In this paper,taking four concrete pouring layers in a gravity dam as the research object,heat-fluid coupling method is used to quantitatively analyze the influence of main pipe parameters on the cooling effect,with the quantitative effect of pipe parameters obtained.The resuits show that water temperature decrease from 20 ℃ to 8 ℃,and that every one-degree drop in water temperature will decrease by about 0.30 ℃ of the maximum temperature of concrete.Water flow increases from 0.9 m3/h to 1.2 m3/h,and each 0.1 m3/h increase in water flow will decrease by about 0.33 ℃ of the maximum temperature of concrete.Water flow increases from 1.2 m3/h to 1.5 m3/h,and each 0.1 m3/h increase in water flow will decrease by about 0.29 ℃ of the maximum temperature of concrete.It also shows that cooling effect is better when the pipe spacing is smaller,water temperature is lower and water flow is larger,and that the cooling effect is better when the layout of the double circulation is adopted.These parameters should be considered to find the optimal cooling scheme in practical engineering.关键词
大体积混凝土/水管冷却/热流耦合算法/冷却效果Key words
mass concrete/pipe cooling/heat-fluid coupling method/cooling effect分类
建筑与水利引用本文复制引用
司政,王三禄,王正鑫,辛兰芳..基于热流耦合算法的大体积混凝土水管冷却仿真分析[J].西安理工大学学报,2017,33(3):270-275,6.基金项目
国家自然科学基金资助项目(51409207,51609200,51409208) （51409207,51609200,51409208）
中国博士后科学基金资助项目(2015M582765XB) （2015M582765XB）
西安理工大学科技创新计划资助项目(2016CX24) （2016CX24）
