| 水盐运移方程对流项不同离散格式对比分析 |
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| 引用本文： | 赵文娟,黄凌,李春光.水盐运移方程对流项不同离散格式对比分析[J].人民黄河,2012(8):107-109. |
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| 作者姓名： | 赵文娟 黄凌 李春光 |
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| 作者单位： | 宁夏大学土木与水利工程学院;宁夏节水灌溉与水资源调控工程技术研究中心;北方民族大学数值计算与工程应用研究所 |
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| 摘 要： | 采用有限体积方法求解了一维土壤水盐运移方程,分别将不同的对流项离散格式应用到一维土壤水盐数值模型的求解中。通过对数值计算结果与实测数据进行对比分析,认为在较大的空间、时间步长条件下,QUICK格式有效地减缓了数值振荡和数值扩散的现象。
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| 关 键 词： | 有限体积方法 对流项 离散格式 水盐运移模型 |
Contrast Analysis on Different Discretization Scheme in Water-Salt Mathematical Model |
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| ZHAO Wen-juan,HUANG Ling,LI Chun-guang.Contrast Analysis on Different Discretization Scheme in Water-Salt Mathematical Model[J].Yellow River,2012(8):107-109. |
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| Authors: | ZHAO Wen-juan HUANG Ling LI Chun-guang |
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| Affiliation: | 1.School of Civil and Hydraulic Engineering,Ningxia University,Yinchuan 750021,China; 2.Ningxia Research Center of Technology on Water Saving Irrigation and Water Resources Regulation,Yinchuan 750021,China; 3.Research Institute of Numerical Computation and Engineering Application,North University for Nationalities,Yinchuan 750021,China) |
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| Abstract: | Finite Volume Method(FVM) was used to solve one-dimensional vertical infiltration of unsaturated soil water-salt mathematical model,and different advection schemes were applied to illustrate the one-dimensional mathematical model respectively.The results show that in this numerical model,QUICK scheme,comparing with other schemes,can reduce numerical oscillation and dispersion more effectively under the conditions of longer space and time step. |
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| Keywords: | FVM advection terms discrete scheme water-salt model |
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