陶粒湿屋面传热过程的有限元解法

Finite element method in heat transfer process of the moist ceramsite particle roof

从陶粒湿屋面的隔热机理出发,对陶粒湿屋面的热湿传递耦合过程进行了理论分析,建立陶粒湿屋面传热过程数学模型及其边界条件,然后,用有限元法对其进行离散,再应用MATLAB语言程序模拟计算出屋面外表面综合温度和内表面温度与实测结果比较,表明二者吻合得很好。从而验证了在陶粒湿屋面传热过程中应用有限元法的正确性,为定量研究湿屋面传热过程提供了理论依据,对可持续建筑的研究和实践具有启发价值。

Initialed from the insulation principle on the moist ceramsite particle roof,a coupling process of the heat and humidity transfer process in the moist ceramic particle roof are theoretically discussed and the mathematical model and the boundary condition are established.Then the governing equation and boundary conditions are separated by the finite element method,and the value of the outside surface synthetical temperature and the inside surface temperature about the above roofs are simulated by the MATLAB language program.The results coincide well with the testing value.This has confirmed the accuracy of the finite element method in the heat transfer process of the moist ceramic particle roof.This results can provide a theoretical basis for the quantitative study of the moist ceramic particle roof＇s heat transfer process,it also have the inspiration value to the sustainable construction＇s research and practice.