| 木材径向导温系数数学模型 |
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| 引用本文： | 林铭,饶久平,谢拥群,杨庆贤,廖益强,魏微.木材径向导温系数数学模型[J].福建农林大学学报(自然科学版),2012,41(3):320-323. |
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| 作者姓名： | 林铭 饶久平 谢拥群 杨庆贤 廖益强 魏微 |
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| 作者单位： | 福建农林大学材料工程学院,福建福州,350002 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 将木材的细胞结构简化为一个中空的细长圆柱形模型,应用统计热力学原理和类比推理方法推导木材径向导温系数的表达式.利用该表达式计算23种木材的径向导温系数,并与相同条件下的试验数值进行比较,得到的最大理论误差为14%,平均误差为5.9%.
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| 关 键 词： | 导温系数 木材 径向 数学模型 |
Mathematical model of wood thermal diffusivity in radial direction |
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| LIN Ming
,
RAO Jiu-ping
,
XIE Yong-qun
,
YANG Qing-xian
,
LIAO Yi-qiang
,
WEI Wei.Mathematical model of wood thermal diffusivity in radial direction[J].Journal of Fujian Agricultural and Forestry University,2012,41(3):320-323. |
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| Authors: | LIN Ming RAO Jiu-ping XIE Yong-qun YANG Qing-xian LIAO Yi-qiang WEI Wei |
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| Institution: | (College of Material Science and Engineering,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China) |
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| Abstract: | Cell structure of wood was modeled as a cylinder with a thin and long hollow.Theoretical expression of wood thermal diffusivity in radial direction was derived by the analogy and statistical thermodynamics based on the cell structure of monoclinic system of wood cellulose crystal.Theoretical values of wood thermal diffusivity in radial direction were calculated with the derived expressions for 23 tree species.The maximum error was 14% and the average error was 5.9% between existing experimental values and theoretical ones for investigated species under the same condition. |
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| Keywords: | thermal diffusivity wood radial direction mathematical model |
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