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-  2017 

混凝土内部温度场的细观数值模拟研究 Mesoscopic numerical simulation of the temperature field of concrete

Keywords: 混凝土,细观格构网络模型,热传导,数值模拟

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Abstract:

通过对混凝土热传导的细观特性分析,探讨混凝土的非均质特性对热传导过程的影响规律.假定混凝土由砂浆、粗骨料以及二者界面过渡区(ITZ)组成,利用Voronoi单元剖分技术建立细观格构网络模型,是开展热传导过程研究的新途径.基于非线性分析的热传导方程,利用伽略金加权余数法和有限差分法,确定其方程的数值形式,以水泥砂浆与花岗岩为例,开展了基于细观格构网络模型的混凝土热传导过程数值仿真分析.数值计算表明,混凝土的细观格构网络模型可有效地呈现其热传导过程,并可确定其内部温度场分布规律

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