水管冷却等效热传导方程中混凝土初温的研究  

Research of concrete initial temperature in equivalent heat conduction equation of pipe cooling

作　　者：黄耀英[1] 何光宇[2] 周宜红[1] 周建兵[3] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002 [2]中国水电顾问集团成都勘测设计研究院,四川成都610072 [3]中国长江三峡集团公司,湖北宜昌443002

出　　处：《武汉大学学报（工学版）》2013年第1期105-108,共4页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:51079079;51209124)

摘　　要：针对进行水管冷却的混凝土浇筑仓温度场仿真计算时,水管冷却等效热传导方程中的混凝土初温的计算存在不同的算法,采用水管冷却精细有限元法和水管冷却等效热传导法,对含冷却水管的混凝土棱柱体进行温度场对比分析,研究了水管冷却等效热传导法中混凝土初始温度的计算方法.分析认为水管冷却等效热传导方程中的混凝土初温应是含冷却水管的混凝土棱柱体在通水开始时刻的混凝土平均温度,该平均温度可由混凝土棱柱体单元高斯点温度与高斯点所占体积的乘积除于混凝土棱柱体单元体积获得.According to the temperature field simulation calculation of concrete pouring warehouse with pipe cooling,concrete initial temperature in the equivalent heat conduction equation of pipe cooling have different algorithms.This paper adopts cooling pipe finite element method and cooling pipe equivalent heat transfer method to comparatively analyse the temperature fields of concrete prism body with cooling pipes;and it studies the calculation method of concrete initial temperature in cooling water pipes by equivalent heat transfer method.The analytical results show that the concrete initial temperature in the equivalent heat conduction equation of pipe cooling is average temperature of concrete prism body with cooling pipes at pipe cooling start time.This average temperature can be get with the product of Gaussian point temperature and Gaussian point volume divided by concrete prism body unit volume.

关 键 词：水管冷却 有限元法 等效热传导法 混凝土初温 

分 类 号：TV554.4[水利工程—水利水电工程]