基于并层单元的大体积混凝土水管冷却温度场热-流耦合精细计算

张超; 段寅; 刘杏红; 常晓林

doi:10.6052/j.issn.1000-4750.2013.08.0779

基于并层单元的大体积混凝土水管冷却温度场热-流耦合精细计算

张超^1,,
段寅^{1, 2},
刘杏红^{1, 3},
常晓林¹

1.
武汉大学水资源与水电工程科学国家重点实验室,武汉 430072;
2.
长江水利委员会长江勘测规划设计研究院,武汉 430010;
3.
武汉大学土木建筑工程学院,武汉 430072

基金项目: 国家重点基础研究发展计划项目(973计划)(2013CB035901); 国家自然科学基金青年科学基金项目(50909078)

详细信息

作者简介:
段寅(1986-), 男, 湖北武汉人, 工程师, 博士, 从事高混凝土坝温度控制数值仿真研究工作(E-mail:duanyin_0224@126.com); 刘杏红(1979-), 女, 湖北武汉人, 副教授, 博士, 主要从事混凝土结构数值仿真和结构风险分析研究工作(E-mail:liuxhphd@163.com); 常晓林(1963-), 男, 湖北随州人, 教授, 博士, 从事高坝结构设计理论与数值仿真研究工作(E-mail:changxl@whu.edu.cn).

通讯作者:
张超(1988-), 男, 湖北麻城人, 博士生, 从事高混凝土坝温度控制数值仿真研究工作(E-mail:gonopo2006@126.com).

中图分类号: TV315
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出版历程
- 收稿日期: 2013-08-25
- 修回日期: 2014-01-01
- 刊出日期: 2014-12-24

THE PRECISE HEAT-FLUID COUPLING METHOD OF MASS CONCRETE WITH COOLING PIPES BASED ON LAYER-MERGED ELEMENT

1.
State Key Laboratory of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China;
2.
Changjiang Water Resource Commission Changjiang Institute of Survey,Planning, Design and Reasearch, Wuhan 430010, China;
3.
School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China

摘要

摘要: 热-流耦合精细算法能准确反映冷却水管附近温度梯度,从而精确计算大体积混凝土水管冷却温度场,然而该方法在有限元计算中存在前处理规模大、计算效率低的缺点;依据混凝土的热力学参数随龄期变化特性和混凝土水管冷却温度场分布规律,开发了一整套热-流耦合精细计算的前、后处理程序,在计算过程中依据龄期特性对混凝土单元不断进行并层处理,从而实现了大体积混凝土水管冷却温度场整体-局部一致模型的快速建立和高效精确数值模拟。数值计算算例表明该方法能在保证计算精度的同时,极大地降低有限元计算过程中的单元规模,有效地节约了计算时间,提高了计算效率,使得大体积混凝土温度场全过程精细数值仿真得以实现。
- 大体积混凝土 /
- 温度场 /
- 热-流耦合算法 /
- 水管冷却 /
- 并层单元
Abstract: The temperature gradient near cooling pipes in mass concrete can be taken into account by a heat-fluid coupling method, and then the pipe cooling temperature field of mass concrete can be accurately calculated. However, the preprocessor of the method is very complex and the amount of calculation is huge and inefficient by finite element simulation. A set of pre-processing and post-processing programs is developed to improve the heat-fluid coupling method, which based on concrete thermal and mechanical parameters changing with age and temperature distribution field of concrete by cooling pipes. By a layer-merged element, overall and local consistency models can be easily constructed and a temperature field can be precisely simulated in the program. Numerical examples show that the simulation method can not only ensure calculation accuracy, but also greatly reduces the simulation scale and improves efficiency. Thusly, it makes the precise simulation of a temperature field in mass concrete come true.
- mass concrete /
- temperature field /
- heat-fluid coupling method /
- pipe cooling /
- layer-merged element

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参考文献(13)

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文章访问数: 284
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基于并层单元的大体积混凝土水管冷却温度场热-流耦合精细计算

通讯作者: 张超(1988-), 男, 湖北麻城人, 博士生, 从事高混凝土坝温度控制数值仿真研究工作(E-mail:gonopo2006@126.com).

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THE PRECISE HEAT-FLUID COUPLING METHOD OF MASS CONCRETE WITH COOLING PIPES BASED ON LAYER-MERGED ELEMENT

期刊类型引用(2)

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目录

通讯作者:
张超(1988-), 男, 湖北麻城人, 博士生, 从事高混凝土坝温度控制数值仿真研究工作(E-mail:gonopo2006@126.com).