This work presents a predictive transient two-dimensional model describing the evolution of heat, mass and mechanical stresses during wood dehydration inside an experimental drying chamber. The history of the distributions of moisture content and temperature and the effects produced by its gradients on the stresses were simultaneously modeled. The non-linear coupled differential equations of heat, mass and stresses were integrated by the Control Volume Finite Element method using triangular elements with linear interpolation functions for the dependent variables. Variation of the physical and mechanical properties with the moisture content and temperature in the wet wood were included in the analysis. Experimental results of Pinus radiata being dried inside a conditioned chamber at constant air velocity equal to 1.6 m/s, 44 °C dry-bulb and 36 °C wet-bulb temperatures were used for validation purposes. The mathematical model allows an accurate prediction of the relevant industrial information, such as: drying curves, evolution of temperature distribution, history of moisture content distribution and mass/thermal stresses.

这项工作提出了一个预测性的瞬态二维模型，该模型描述了实验干燥室内的木材脱水过程中热量，质量和机械应力的演变。同时模拟了水分含量和温度分布的历史以及其梯度对应力产生的影响。热量，质量和应力的非线性耦合微分方程通过控制体积有限元方法进行积分，该方法使用具有线性插值函数的三角元素作为因变量。分析中包括了物理和机械性能随湿木材中水分含量和温度的变化。辐射松的实验结果为了在验证室内以等于1.6 m / s的恒定风速干燥，将44°C的干球温度和36°C的湿球温度用于验证目的。该数学模型可以准确预测相关的工业信息，例如：干燥曲线，温度分布的演变，水分含量分布的历史和质量/热应力。