关键词: 数值模拟, 温度控制, 水管冷却, 有限元

Abstract: We present a method for numerical simulation of temperature field of mass concrete with cooling pipes.Cooling pipes are put in conventional concrete element.Contact surface of concrete and cooling pipes is considered as thermal surface in boundary conditions of control equation.And energy dissipating through cooling pipe walls in concrete is brought into conventional functional.A governing equation of finite element method is established for concrete containing cooling pipes with variational principle.A finite element simulation program for three-dimensional transient temperature field is designed.In the program,topology information of cooling pipe mesh can be completed automatically.Cooling pipes can cross concrete elements anywhere which does not increase difficulty of mesh generation.Numerical examples show that the method accurately simulates cooling of concrete.

Key words: numerical simulation, temperature control, cooling pipes, finite element method