冷却水管的改进埋置单元法在大型泵站温控仿真中的应用研究  

Application Research on an Improved Embedded Element Method for Cooling Pipe in the Simulation of Temperature Control in a Large Pumping Station

作　　者：孙超 袁敏[2] 胡敏杰 汪馥宇 孙巧荣 强晟 Sun Chao;Yuan Min;Hu Min-jie;Wang Fu-yu;Sun Qiao-rong;Qiang Sheng(Zhejiang Water Conservancy and Hydropower Construction Holding Development Co.,Hangzhou 310020,Zhejiang,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,Jiangsu,China)

机构地区：[1]浙江省水利水电建设控股发展公司,浙江杭州310020 [2]河海大学水利水电学院,江苏南京210098

出　　处：《浙江水利科技》2019年第2期1-4,8,共5页Zhejiang Hydrotechnics

基　　金：国家自然科学基金资助(51679074);浙江省水利科技计划项目资助

摘　　要：大型水利工程梁湖泵站具有结构复杂、规模大、实心体浇筑块尺寸大等特点,导致整体有限元网格单元规则性较差,模型单元数量多,传统常用的冷却水管离散单元模型难以顺利布置在混凝土网格单元中,且计算工作量大。采用冷却水管改进埋置单元法,能够考虑冷却水管内沿程水温变化及其对温度场的影响,对该大型泵站施工期进行温控仿真数值模拟。计算结果表明,冷却水管的改进埋置单元法在不增加有限单元数量的条件下,具有较高的精度和较低的计算时间成本,且前处理相对比较简单,可见其效率和精度的综合效果较好。The large-scale water conservancy project,Lianghu pumping station,has the characteristics of complex structure,large scale and large size of solid body pouring block,which leads to the poor regularity of the whole finite element element and the large number of model elements. The traditional discrete element model for cooling water pipe is difficult to be arranged in such a concrete mesh,and the calculation work load is very heavy. In this paper,an improved embedded element method for cooling water pipe is adopted,which can take the variation of water temperature along the cooling water pipe and its influence on the temperature field into account. The temperature control numerical simulation of the large pumping station is carried out during the construction period with this method. The calculation results show that the improved embedded element method for cooling water pipe has higher precision and lower calculation time cost without increasing the number of elements,and the preprocessing is relatively simple. It can be seen that the comprehensive effect of the efficiency and accuracy is better,and can be applied in similar large complex engineering structures.

关 键 词：冷却水管 改进埋置单元法 大型泵站 温控仿真 

分 类 号：TV675[水利工程—水利水电工程]