| 任理,李保国,曾凡,邢维玲.土壤溶质运移两种新的求参方法的应用[J].水利学报,1999,30(11):0001-0007 |
| 土壤溶质运移两种新的求参方法的应用 |
| Aplication of two new methods for determining the parameters of solute transport in soils |
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| DOI： |
| 中文关键词: 溶质运移 穿透曲线 孔隙流速 水动力弥散系数 Brenner数 斜率法 等斜率法 |
| 英文关键词: solute transport breakthrough curve pore flow velocity hydrodynamic dispersion coefficient Brenner number slope method equal-slope method |
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| 摘要点击次数: 1966 |
| 全文下载次数: 90 |
| 中文摘要: |
| 本文通过对3种不同质地土壤(砂质壤土、壤质粘土和粉砂壤土)的室内水盐入渗实验资料的分析，依据山口(Yamaguchi)等提出的斜率法和等斜率法，由土壤溶质运移的穿透曲线数据，同时估算了平均孔隙流速和水动力弥散系数，并与实测值、简化解析解法及矩法求算的结果进行了比较。此外，作者还探讨了抛物插值和Brenner数大小对求参精度的影响。 |
| 英文摘要: |
| Based on the theory of the solute transport in soils,the experimental data of in filtration in three kinds of soil texture are analyzed.The slope method and equal-slope method developed by Yamguchi et al are applied to determine the average pore flow velocity and hydrodynamic dispersion coefficient.The calculation results are compared with the measured data,analytical solution and moment method.In addition,the efficiency of the parabolic interpolation technique in determining the parameters and the accuracy of the new approaches for different values of Brenner number are also investigated. |
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