摘要
在分析木材微观形态的基础上提出木材生物学细胞模型和木材纤维结构模型,应用统计热力学原理和类比推理方法,从理论上推导出木材径向导温系数的数学表达式,对25种木材作理论计算,并与同条件下的试验值比较,结果表明,理论最大误差12.9%,平均误差5.6%。
The biological cell model and microscopic structure model of wood fiber were advanced on the basis of the analysis of wood microscopic shape.The mathematical expression of wood thermal diffusivity in radial direction was derived theoretically by statistical thermodynamic principle and analogy.Through theoretical calculation about 25 wood species,the maximum error is 12.9%and average error is 5.6%comparing with the existing experimental values under the same conditions in this work.
基金
国家自然科学基金项目(30871982)
关键词
导温系数
木材
径向
理论表达式
thermal diffusivity
wood
radial direction
theoretical expression
