| 间歇供水条件下考虑土壤水滞后作用的水分入渗数值模拟 |
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| 引用本文： | 许迪,李益农,刘钰.间歇供水条件下考虑土壤水滞后作用的水分入渗数值模拟[J].灌溉排水学报,1996(2). |
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| 作者姓名： | 许迪 李益农 刘钰 |
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| 作者单位： | 中国水利水电科学研究院 |
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| 摘 要： | 本文对间歇供水条件下土壤入渗过程进行了试验研究，采用数值模拟方法描述了考虑土壤水滞后的水分入渗过程。结果表明文中使用的确定性模型虽能较好地模拟土壤水分状况改变对入渗率的影响，却无法反映表层土壤物理性能变化对入渗的作用。当利用一维垂向非饱和土壤水运动模型来描述间歇供水条件下的土壤入渗分布过程时，应改进模拟技术使之能包容后者的影响。
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| 关 键 词： | 间歇供水，水分滞后，数值模拟，入渗率，脱湿─吸湿 |
Numerical Simulation of Soil Infiltration Considering the Effect of Hysteresis under Intermittent Water Application |
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| Xu Di, Li Yinong, Liu Yu.Numerical Simulation of Soil Infiltration Considering the Effect of Hysteresis under Intermittent Water Application[J].Journal of Irrigation and Drainage,1996(2). |
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| Authors: | Xu Di Li Yinong Liu Yu |
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| Institution: | China Institrte of Water Resources and Hydropower Research Beijing 100044 |
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| Abstract: | A laboratory experiment on columns of disturbed soil was conducted to describe the distribution of soil intake under intermittent water application and the process of surface soil infiltration considering tile effect of hysteresis was modeled by means of numerical simulation technique. The results indicate that although the deterministic model employed in the paper can be used to simulate fairly the effect of changes of soil moisture on infiltration rates,but not for the influence of changes of surface soil physical characteristics as affected by intermittent saturating and draining of soil columns on infiltration for this reason,an improvement to simulation technique would be necessary to solve the problem mentioned above. |
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| Keywords: | Intermittent water applicateon Hysteresis Numerical simulation Infiltrationrate Dryin wetling |
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