Transient heat transfer analysis of anisotropic material by using Element-Free Galerkin method

Transient heat transfer analysis of anisotropic material by using Element-Free Galerkin method
复制标题

利用无元素伽辽金法分析各向异性材料的瞬态传热

DOI:
10.1016/j.icheatmasstransfer.2017.04.003
复制
发表时间:
2017-05
影响因子:
7
通讯作者:
Wang Shusen
Wang Shusen
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhang Jianping;Zhou Guoqiang;Gong Shuguang;Wang Shusen

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基于无网格伽辽金法建立了各向异性材料的瞬态传热模型。该模型简化了各向异性材料的预处理,使导热系数由正交各向异性因子和偏角来执行。通过复杂的工程传热问题对所提出的数值模型和MATLAB程序进行了验证。研究了正交各向异性因子和偏角对解的影响。适当的正交各向异性系数沿着大尺寸的几何形状和适当的偏角使温度分布更加均匀。在实际问题中,对于瞬态传热问题,无网格法的计算精度比有限元法高。
A transient heat transfer model for anisotropic material is established based on Element-Free Galerkin (EFG) method. The model can simplify the pretreatment for anisotropic material, which make the thermal conductivity executed by orthotropic factor and off-angle. The proposed numerical model and MATLAB programs are verified by complex engineering heat transfer problems. The effects of orthotropic factors and off-angles on solutions are investigated. The appropriate orthotropic factors along the large size of geometries and appropriate off-angle make the temperature distribution more uniform. The solutions obtained by EFG show a higher calculation precision than the FEM solutions for the transient heat transfer problems in practical problems.
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