| 考虑滞流作用的潜水变边界井流模型及求解 |
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| 引用本文： | 卢玉东,李佩成. 考虑滞流作用的潜水变边界井流模型及求解[J]. 灌溉排水学报, 2005, 24(2): 27-30 |
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| 作者姓名： | 卢玉东 李佩成 |
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| 作者单位： | 长安大学,环工学院,陕西,西安,710054;长安大学,环工学院,陕西,西安,710054 |
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| 摘 要： | 在分析总结国内外渗流理论与技术研究成果的基础上,对潜水渗流场的滞流性进行了理论上的探讨。将渗流场划分为影响区与非影响区,分析了潜水渗流场边界的可变性,建立起潜水含水层变边界渗流的数学物理模型。每个潜水含水层变边界井流计算模型可以看作是一系列不同隔水周界的"割离井"模型的叠加,应用叠加原理,完成了给定时段内的变边界计算的近似解。
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| 关 键 词： | 潜水非稳定井流 滞流理论 影响半径 变边界计算 |
| 文章编号： | 1000-646X(2005)02-0027-04 |
| 修稿时间： | 2004-12-13 |
The Study of Time-dependent Boundary Model of Inconstant Well Flow in Unconfined Aquifer Ground Water Flow Due to Hydrodynamic Lag |
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| LU Yu-dong,LI Pei-cheng. The Study of Time-dependent Boundary Model of Inconstant Well Flow in Unconfined Aquifer Ground Water Flow Due to Hydrodynamic Lag[J]. Journal of Irrigation and Drainage, 2005, 24(2): 27-30 |
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| Authors: | LU Yu-dong LI Pei-cheng |
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| Abstract: | In this paper,the author summarizes achievements of principles and technical knowledge relating to flow in porous medium,and takes the initiative to study hydrodynamic lag in ground water flow systematically. Due to hydrodynamic lag character in phreatic aquifer,the ground water flow field can be divided into pertubating part and nopertubating part,that illustrates the boundary of phreatic aquifer is changeable .The degrees that the change of impervious boundary exerts influence over calculation of isolated well model in phreatic aquifer is analyzed.Thus,a physical model with time-dependent boundary in phreatic aquifer is established. The model with time dependent boundary can be superposition of a series of isolated well model with variable impervious boundary.Applied superposition principle,analytical solution of the model is derived. |
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| Keywords: | groundwater flow in unconfined aquifer principle of hydrodynamic lag Influence radius computation model of time-dependent boundary |
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