摘要
根据木材并联毛细管模型的假设和Poiseaiue方程建立了三倍体毛白杨渗透率模型,按照气流量、测试样两端的压强降以及毛细管的压强降的关系测定出三倍体毛白杨的渗透率,最终首次计算出三倍体毛白杨在高1.5m、离树心半径2.2cm处的平均渗透率为6.58×10-9m2,为今后测定渗透率的分布奠定了基础。
According to the hypothesis of parallel connection of wood capillary and Poiseuille equation, this essay established the mathematical model of percolation rate. Then determined the percolation rate of triploid of populus tomentosa carr. in term of the relation of air flow and pressure drop of specimen and pressure drop of capillary. At last determined the percola- tion rate of triploid of populus tomentosa is 6. 58 ×10^-9m^2 which is 2. 2 centimeters away from heart wood and 1.5 meters high for the first time. This is the prepare for the measure of percolation rate distributing.
出处
《陕西科技大学学报（自然科学版）》
2006年第6期61-64,共4页
Journal of Shaanxi University of Science & Technology
基金
陕西省科技厅自然科学基金项目(2004B15)
关键词
三倍体毛白杨
气流法
渗透率
数学模型
triploid of populus tomentosa carr.
air flow method
percolation rate
mathematical model
