摘要
木材干燥过程存在着热质互换和能量的转移,这为从热力学的角度研究木材干燥过程提供了前提条件,因此提出利用热力学原理分析木材干燥过程含水率和温度变化规律的数学模型。首先建立描述含水率和温度变化的高阶非线性偏微分方程组,然后采用有限元分析原理将方程组离散化,再经过一系列数学运算得到方程的收敛解,具体方法为牛顿迭代法,最后通过对木材含水率和温度变化情况仿真结果的分析,验证该方法的可行性及数学模型的准确性。
Wood drying process is a complicated heat and mass transfer course, which provides precondition for the study of wood drying process. In order to build an accurate and efficient computational model, thermodynamics is used for simulating moisture con- tent and temperature variation of wood during drying process. In the first step, the conservation equations are built. Secondly, finite element analysis method is used to discretize the partial difference equations. Then, convergent solutions are obtained after a number of numerical issues. Finally, the simulation analysis on wood moisture content and temperature variation shows the effectiveness of the model.
出处
《森林工程》
2014年第1期49-51,共3页
Forest Engineering
基金
国家林业公益性行业科研专项(201304502)
关键词
木材含水率
温度
热力学
wood moisture content
temperature
thermodynamics
作者简介
周正,硕士研究生.研究方向：复杂系统建模与智能控制.
通讯作者：孙丽萍，博士，教授。研究方向：过程控制与检测技术等。Email：595464327@qq．com.
