| 滴灌条件下土壤渗流数值模拟研究 |
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| 引用本文： | 管英柱. 滴灌条件下土壤渗流数值模拟研究[J]. 中国西部科技, 2011, 10(26): 12-13. DOI: 10.3969/j.issn.1671-6396.2011.26.007 |
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| 作者姓名： | 管英柱 |
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| 作者单位： | 长江大学石油工程学院,湖北荆州434023;油气钻采工程湖北省重点实验室,湖北荆州434023 |
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| 摘 要： | 基于弹性不稳定渗流过程的基本特征,考虑了土壤及水的压缩性影响,建立了单点源滴灌条件下渗流微分方程,根据数值计算方法可以模拟不同灌溉时间及滴头流量条件下土壤水头分布和润湿锋距离。计算结果表明:随着滴头流量的增大和灌溉时间的延长,土壤压降漏斗前缘不断向外扩展;在相同的滴头流量条件下,润湿锋距离增加的幅度随着灌溉时间的延长而减小。
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| 关 键 词： | 滴灌 渗流 润湿锋 数值模拟 |
Study on Soil Seepage Law Under the Single Point Source of Drip Irrigation |
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| GUAN Ying-zhu. Study on Soil Seepage Law Under the Single Point Source of Drip Irrigation[J]. Science and Technology of West China, 2011, 10(26): 12-13. DOI: 10.3969/j.issn.1671-6396.2011.26.007 |
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| Authors: | GUAN Ying-zhu |
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| Affiliation: | GUAN Ying-zhu1,2(1.College of Petroleum Engineering,Yangtze University,Jingzhou,Hubei 434023,2.Key Laboratory of Dring and Exploitation Engineering for Oil and Gas in Hubei Province,Hubei 434023) |
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| Abstract: | Based on the basic characteristics of elastic unsteady seepage flow,differential equations of seepage flow was established for single point source of drip irrigation considering the impact of compression of soil and water.Hydraulic head distribution and wetting front distance under different irrigation time and different dripper discharge could be simulated by this model.The calculation results showed that the pressure-drop funnel expanded with increasing of dripper discharge and with extending of irrigatio... |
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| Keywords: | Drip irrigation Seepage flow Wetting front Numerical simulation |
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