[1]张振华,蔡焕杰,杨润亚,等.滴灌入渗土壤水分分布的数值研究[J].水土保持研究,2004,11(03):91-94.
　ZHANG Zhen-hua,CAI Huan-jie,YANG Run-ya,et al.The Water Content Distribution of Trickle Source Infiltration[J].Research of Soil and Water Conservation,2004,11(03):91-94.
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滴灌入渗土壤水分分布的数值研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 11 期数: 2004年03期 页码: 91-94 栏目: 出版日期: 1900-01-01
Title:
The Water Content Distribution of Trickle Source Infiltration
作者:
张振华1,2, 蔡焕杰2, 杨润亚1, 赵永2
1. 烟台师范学院地理与资源管理学院 山东 烟台 264025;
2. 西北农林科技大学教育部旱区农业水土工程重点实验室 陕西 杨陵 712100
Author(s):
ZHANG Zhen-hua1,2, CAI Huan-jie2, YANG Run-ya1, ZHAO Yong2
1. The Geography and Resource Management College of Yantai Normal University, Yantai 264025, Shandong, China;
2. The Key Laboratory of Agriculture Soil and Water Engineering, Northwestern Science and Technology University of Agriculture and Forestry, Y
关键词:
滴灌; 水分运动; 数值解; 有限差分; 质量平衡
Keywords:
drip irrigation; water movement; numerical solutions; mass balance
分类号:
S275.6;S152.7
摘要:
采用Brandt点源入渗柱状流物理模型和非迭代的交替向隐式差分法与牛顿迭代法相结合的数值方法对杨陵黏壤土滴灌水分入渗过程进行了模拟，并同室内实验结果进行了对比。结果表明在小滴头流量条件下，数值模型能够精确地用于对滴灌入渗湿润锋、湿润体内含水率分布的模拟。由于本模型在对入渗边界条件的处理上忽略了地表积水的体积，在大流量条件下，地表积水区域大且其形成主要发生在入渗的开始阶段，导致该阶段数值模拟的湿润体内水量较实际值偏低25%。
Abstract:
Brandt simulation model based on the metric flux potential concept was used to describe two-dimensional infiltration from a point source.The simulated wetting front indicated closer agreement with experiment data in case of small discharge rate,however,in case of big discharge rate,the simulated wetting front indicated disparity with experiment data,especially in initial infiltration time.The simulated soil water content distribution indicated closer agreement with experiment data.The applied water volume balance error analyses show that the error was 25% in initial time and the error decrease with time,after 200 min the applied water volume based soil water content simulated data is very close agreement with experiment.

参考文献/References:

[1] 张振华, 蔡焕杰, 郭永昌, 等.滴灌土壤湿润体影响因素的实验研究[J].农业工程学报, 2002, 18(2):17-20.
[2] Masond Meshkat, Richard C Warner, Stephen R Workman.Modeling of evaporation reduction in drip irrigation system[J].Journal of Irrigation and Drinage Engineering, 1999, 125(6):315-323.
[3] 李光永, 曾德超.滴灌土壤湿润体特征值的数值算法[J].水利学报, 1997, (7):1-6.
[4] Bresler E.Analysis of trickle irrigation with application to design probles[J]. Irrig Sci, 1978, 1:13-17.
[5] Or D, F E Coelho.Soil water dynamics under drip irrigation:transient flow and uptake modles[J].Soil Sci Soc Am J, 1996, 39(6):2017-2025.
[6] Zhang R.Modleling flood and drip irrigations[J]. Idid Journal, 1996, 45(2):81-92.
[7] Levin I, P C Van Rooyen, F C Van Rooyen.The effect of discharge rate and intermittent water application by pointsource irrigation on the soil moisture distribution pattern[J].Soil Sci Soc Am Proc, 1979, 43:8-16.
[8] Ben-Asher J, D O Lomen, A W Warrick.Liner and noliner modles of infiltration from a point source[J].Soil Sci Soc Am Proc, 1978, 42:3-6.
[9] Omary M, Ligon J T.Three-dimentional movment of water and pesticide from trickle irrigation:finite element modle[J].Trans ASAE, 1979, 35(3):811-821.
[10] Taghavi S A, Marino M A, Rolston D E.Infiltration from trickle irrigation source[J].J Irrig and Drain Engrg ASCE, 1984, 110(4):331-341.

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备注/Memo

收稿日期:2004-4-13;
基金项目:国家高技术研究发展计划项目（2002AA2Z4031）；烟台师范学院中青年自然科学基金项目的——部分
作者简介:张振华（1971- ），河北藁城人，博士，教授，主要从事水土资源高效利用研究.

更新日期/Last Update: 1900-01-01