Addressing the problem of non-steady state liquid flow in wood
Addressing the problem of non-steady state liquid flow in wood
复制标题
解决木材中非稳态液体流动问题
DOI：
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发表时间：
1981
影响因子：
3.4
通讯作者：
W. Banks
中科院分区：
文献类型：
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作者：
W. Banks
讨论了处理非稳态液体流动数据的有关问题。它表明，达西流动模型是从根本上不精确的非稳态流动木材时，由于：1）所观察到的渗透率随试样长度增加2）在木材孔隙中遇到的直径范围宽。由于这种宽范围的孔尺寸，液体比其他流动路径更快地渗透一些流动路径。这可能会导致出现表面力抵抗渗透，无论是“润湿”还是“非润湿”液体。
这些不同的因素似乎不太可能被准确地量化。因此，从稳态渗透率数据精确预测液体渗透率可能是虚幻的。
SummaryProblems associated with handling non-steady liquid flow data are discussed. It is shown that the Darcian flow model is fundamentally imprecise when applied to non-steady state flow in wood due to:1)the observed decrease in permeability with increased specimen length2)the wide range of diameters encountered in wood pores. Because of this wide range of pore sizes, liquid penetrates some flow paths more rapidly than others. This may give rise to the occurrence of surface forces resisting penetration, with both “wetting” and “non-wetting” liquids.
It seems unlikely that these various factors can be accurately quantified. Hence the precise prediction of liquid penetration rate from steady state permeability data may be illusory.