水管冷却理论解与有限元结合的计算方法  

A Combined Method of Theoretic and Numerical Solutions for Pipe Cooling in Concrete Dams

作　　者：麦家煊[1] 

机构地区：[1]清华大学水电系

出　　处：《水力发电学报》1998年第4期31-41,共11页Journal of Hydroelectric Engineering

摘　　要：本文将水管冷却理论解与有限元方法相结合，利用这两种方法的长处，克服它们的短处，计算复杂边界条件下的混凝土坝经多期水管冷却后的温度场和温度应力。经三峡大坝的计算表明，这种结合方法比单纯采用有限元方法少占用计算机许多存储单元，节省大量的机时。This paper presents a combined method of theoretic and numerical solutions to take their advantage and overcome their weaknesses for computation of temperature field and thermal stresses in concrete dams with multi cooling pipes and complicated boundary conditions.The computational results of Three Gorges Dam show that this combination method needs far less memory capacity and saves much more time than alone Finite Element Method with small element sizes.

关 键 词：水管冷却 理论解 联合计算 混凝土坝 有限元 

分 类 号：TV642[水利工程—水利水电工程]