| 蓄水坑灌单坑土壤水分运动有限元模拟 |
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| 引用本文： | 郭向红,孙西欢,马娟娟.蓄水坑灌单坑土壤水分运动有限元模拟[J].农业工程学报,2007,23(10):1-5. |
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| 作者姓名： | 郭向红 孙西欢 马娟娟 |
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| 作者单位： | 太原理工大学水利科学与工程学院,太原,030024 |
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| 基金项目： | 国家自然科学基金;山西省科技攻关项目 |
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| 摘 要： | 为了合理设计干旱地区果树蓄水坑灌，该文根据土壤水动力学原理和单坑入渗土壤水分运动特点，建立了单坑二维土壤水分运动数学模型，采用有限单元法求解，并根据质量守恒原理建立了确定坑内水位变化过程的数学模型。室内单坑入渗土壤水分运动验证试验结果表明坑内水位变化过程、土壤含水率、湿润锋的实测值与模型计算值吻合较好，说明所建立的单坑二维土壤水分运动数学模型和坑内水位变化过程数学模型是正确的，采用有限元法对其求解是可行的，该模型可用于模拟单坑土壤水分分布规律。
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| 关 键 词： | 蓄水坑灌 土壤水分运动 有限单元法 |
| 文章编号： | 1002-6819（2007）10-0001-05 |
| 收稿时间： | 2007/5/12 0:00:00 |
| 修稿时间： | 2007-05-12 |
Finite element method for single pit soil water movement simulation under water storage pit irrigation |
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| Guo Xianghong,Sun Xihuan and Ma Juanjuan.Finite element method for single pit soil water movement simulation under water storage pit irrigation[J].Transactions of the Chinese Society of Agricultural Engineering,2007,23(10):1-5. |
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| Authors: | Guo Xianghong Sun Xihuan and Ma Juanjuan |
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| Institution: | College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China |
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| Abstract: | In order to design water storage pit irrigation of fruiter in arid area reasonably, mathematic model of single pit two-dimensional soil water movement was established based on the theory of soil water dynamics and the characteristics of soil moisture movement of single pit infiltration. The finite element method was used to solve it. The mathematic model was also established to confirm the changing process of water level in water storage pit according to the mass conservation principle. A series of indoor experiments were conducted to verify the model. The computational results derived from the model of water level change in water storage pit, water front and soil moisture content were in accordance with the experimental results. It indicated that the mathematic model of soil water movement and the changing process of water level were correct and solving the model with finite element method was feasible. The model can be used to simulate the single pit soil moisture distribution rule. |
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| Keywords: | water storage pit irrigation soil water movement finite element method |
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