摘要
通过室内试验结果与Hydrus模型模拟计算结果对比分析,认为点源二维、点源三维模拟膜孔灌溉均作了过分的简化,特别是在水平湿润锋的模拟方面,相对误差较大。本文将膜孔处土壤以粗沙代替进行三维模拟,并与室内试验结果进行了验证,得到了较好的模拟结果。
With the contrastive analysis between the results of laboratory experiment and Hydrus simulated calculation,it is considered that both the point-source 2-D simulation and the point-source 3-D simulation on the film-hole irrigation are over simplified,especially more larger relative errors are there in the aspect of the simulation of the horizontal wetting front. A 3-D simulation is made herein by replacing the soil at the film-hole with coarse sand,and then the results are compared with those from the laboratory experiment. In this way,better simulation results are generally obtained.
出处
《水利水电技术》
CSCD
北大核心
2014年第4期109-112,共4页
Water Resources and Hydropower Engineering
基金
河北省教育厅科学研究计划项目-自然科学青年基金(2011161)
河北省自然科学基金资助项目(C2011402042)
关键词
膜孔灌溉
Hydrus-3D
数值模拟
水氮再分布
film-hole irrigation
Hydrus-3D
numerical simulation
nitrogen and water redistribution
