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温室滴灌线源土壤水分运动数值模拟
Numerical simulation of soil water movement under drip irrigated linear resource in green house
【摘要】 根据土壤水动力学理论 ,考虑西红柿根系吸水 ,建立了西红柿生长条件下温室地表滴灌剖面二维土壤水分运动的数学模型 .采用ADI法和Gauess Seidel法联合求解数学模型 ,并进行了数值模拟 .结果表明 ,温室土壤水负压的监测值与计算值有着较好的一致性 .这对温室地表滴灌灌溉制度的制定具有一定的指导意义
【Abstract】 Based on the theory of soil water dynamics and root water uptake of tomatoes,a mathematical model is developed to simulate the soil water infiltration,redistribution and extraction.The model is solved by ADI difference procedure coupling with Gauess\|Seidel method.The calculation results of soil water pressure well agree with the observation data.
【关键词】 滴灌;
土壤水分运动;
数值模拟;
【Key words】 drip irrigation; soil water movment; numerical simulation; ADI difference procedure; Gauess\|Seidel method;
【Key words】 drip irrigation; soil water movment; numerical simulation; ADI difference procedure; Gauess\|Seidel method;
【基金】 国家教育部《高等学校骨干教师资助计划》资助;北京市“九·五”重点科技攻关项目
- 【文献出处】 水利学报 ,Journal of Hydraulic Engineering , 编辑部邮箱 ,2001年02期
- 【分类号】S152.7
- 【被引频次】58
- 【下载频次】427