应用科学学报 ›› 1999, Vol. 17 ›› Issue (3): 366-370.

• 论文 • 上一篇    下一篇

木材径向导热系数的物理力学研究

杨庆贤   

  1. 福建林学院
  • 收稿日期:1998-02-20 修回日期:1998-09-18 出版日期:1999-09-30 发布日期:1999-09-30
  • 基金资助:
    福建省自然科学基金资助项目

Theoretical Approach to the Thermal Conductivity of Wood in the Radial Direction

YANG QINGXIAN   

  1. Fujian College of Forestry, Nanping 353001
  • Received:1998-02-20 Revised:1998-09-18 Online:1999-09-30 Published:1999-09-30

摘要: 提出声子是木材中热传导的能量运载者.应用物理力学的原理和方法,推导出木材径向导热系数的理论表达式.应用该表达式计算了18种木材径向导热系数,最大误差为13.7%,平均误差为5.3%.理论值与实验值的符合程度令人满意.

关键词: 木材, 径向, 导热系数

Abstract: It is suggested that the phonon is the carrier of the transmission of thermal energy in wood in this paper. The theoretical expression of the thermal conductivity of wood in the radial direction is developed on the basic principles of the physical mecha nics. Then, the thermal conductivity of 18 species of trees can be calculated by the formula with the maximum relative error 13.7%, the average relative error 5.3%. Compared with the experimental value in the same condition, the calculation result is satisfactory.

Key words: wood, radial direction, thermal conductivity