A 3D transient nonlinear modelling of coupled heat, mass and deformation fields in anisotropic material
A 3D transient nonlinear modelling of coupled heat, mass and deformation fields in anisotropic material
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DOI：
10.1016/j.ijheatmasstransfer.2012.04.009
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发表时间：
2012-08
影响因子：
5.2
通讯作者：
M. Trcala
中科院分区：
文献类型：
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作者：
M. Trcala
本文研究了木材各向异性结构中非等温水分迁移的三维问题及其在对流干燥中的相应变形。模拟基于木材的正交各向异性的非稳态非线性扩散的水分和热量。将水分梯度和温度梯度设置为传质和传热的驱动力。该模型考虑了材料系数对温度和湿度的依赖性、索雷特效应、达富尔效应和木材的各向异性。推导了用于有限元求解的多物理模型的矩阵形式，并进行了数值模拟。
This paper deals with the numerical solution of a three-dimensional problem of non-isothermal moisture transfer in the anisotropic structure of wood and corresponding wood deformations in convective drying. The simulation is based on the unsteady-state nonlinear diffusion of moisture and heat with respect to the orthotropic nature of wood. The moisture gradient and the temperature gradient are set as driving forces for mass and heat transfer. The model respects the dependence of material coefficients on temperature and moisture, the Soret effect, the Duffour effect and the anisotropic nature of wood. A matrix form of the multiphysics model for FEM solver was derived and numerical simulations were performed.