蓄水多坑入渗条件下土壤水分运动建模与试验  

Numerical Simulation on Soil Water Movement under Water Storage Pits Irrigation

作　　者：马娟娟[1] 孙西欢[1] 郭向红[1] 李永业[1] 

机构地区：[1]太原理工大学水利科学与工程学院,太原030024

出　　处：《农业机械学报》2010年第3期46-51,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(50979065);"十一五"国家科技支撑计划资助项目(2007BAD88B03);山西省科技攻关项目(2007031069);山西省高等学校优秀青年学术带头人支持计划资助项目

摘　　要：针对蓄水坑灌坑内水头高且非恒定和土壤入渗边界复杂的特点,建立了蓄水多坑三维入渗及土壤水分运动数学模型,采用ADI交替方向隐式差分格式结合Gauess-Seidel迭代法对模型进行求解,并进行了试验验证,结果表明计算值与实测值吻合较好,说明所建立的数学模型正确,采用的数值求解方法是可行的。Aimed at the specialties of infiltration head higher and varying under the condition of water storage pits irrigation,numerical model of 3-D infiltration and the soil moisture movement of complicated boundary conditions in water storage pits was established.ADI method and Gauess-Seidel iterative method were used in numerical simulation followed by verification tests.The results showed that the calculated values were in accordance with the experimental results.This indicated the numerical model was correct and the method of solution was feasible.

关 键 词：土壤水分运动 三维入渗 数值模拟 蓄水坑灌 

分 类 号：S152.72[农业科学—土壤学]