| 两种土壤水分动态预测数值方法的应用 |
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| 引用本文： | 丁雪华,史海滨,孔东.两种土壤水分动态预测数值方法的应用[J].内蒙古农业大学学报(自然科学版),2000,21(2):73-77. |
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| 作者姓名： | 丁雪华 史海滨 孔东 |
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| 作者单位： | 内蒙古农业大学水利与土木建筑工程学院,呼和浩特,010018 |
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| 摘 要： | 本文分别采用有限差分法（ＦＤＭ）和Ｇａｌｅｒｋｉｎ有限元方法（ＦＥＭ）求解非饱和土壤水分运动基本方程，采用ＦＯＲＴＲＡＮ７７语言编制了计算程序，并将计算程序对Ｗａｒｒｉｃｋ等试验状态下的土壤水分动态进行模拟对比，结果显示两程序具有较高精度，总体上ＦＥＭ和ＦＤＭ模拟结果均与试验值具有较好的一致性，但ＦＥＭ结果在湿润峰处较ＦＤＭ结果更接近试验值。表明这两种数值计算方法一般都能满足分析或预测土壤水分运动的要求。
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| 关 键 词： | 土壤水分运动 数值方法 有限差分法 有限元法 |
| 修稿时间： | 1999-12-13 |
APPLICATION OF TWO NUMERICAL SCHEME FOR SIMULATING MOISTURE TRANSFER IN UNSATURATED SOIL |
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| DING Xue-hua,SHI Hai-bin,KONG Dong.APPLICATION OF TWO NUMERICAL SCHEME FOR SIMULATING MOISTURE TRANSFER IN UNSATURATED SOIL[J].Journal of Inner Mongolia Agricultural University(Natural Science Edition),2000,21(2):73-77. |
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| Authors: | DING Xue-hua SHI Hai-bin KONG Dong |
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| Abstract: | Both Finite Difference Method (FDM)and Galerkin Finite Element Method(FEM)were used to solving the one-dimensional transient flow equation in unsaturated soil.Two FORTRAN77 programs were presented and used to simulate the soil moisture transfer in unsaturated soil under Warrick et al.(1971)experimental condition.The simulated results agree to Warrick results.However,the results of FEM were more closed to Warrick results than FDM ones at the wet peak in the soil profile.The results showed that both two numerical method can be used to analyze and simulate soil moisture transfer in the soil. |
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| Keywords: | unsaturated soil soil moisture transfer numerical mithod finite difference Galerkin finite element |
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