非饱和土壤中溶质运移对流占优问题的通量校正运移解法

徐绍辉; 张佳宝; 刘建立

Volume 26 Issue 5

Sep. 2001

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Article Navigation > Earth Science > 2001 > 26(5): 529-532

XU Shao-hui, ZHANG Jia-bao, LIU Jian-li, 2001. FCT ALGORITHM FOR CONVECTION-DOMINATED SOLUTE TRANSPORT IN UNSATURATED SOIL. Earth Science, 26(5): 529-532.

Citation:

XU Shao-hui, ZHANG Jia-bao, LIU Jian-li, 2001. FCT ALGORITHM FOR CONVECTION-DOMINATED SOLUTE TRANSPORT IN UNSATURATED SOIL. Earth Science, 26(5): 529-532.

XU Shao-hui, ZHANG Jia-bao, LIU Jian-li, 2001. FCT ALGORITHM FOR CONVECTION-DOMINATED SOLUTE TRANSPORT IN UNSATURATED SOIL. Earth Science, 26(5): 529-532.

Citation:

XU Shao-hui, ZHANG Jia-bao, LIU Jian-li, 2001. FCT ALGORITHM FOR CONVECTION-DOMINATED SOLUTE TRANSPORT IN UNSATURATED SOIL. Earth Science, 26(5): 529-532.

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FCT ALGORITHM FOR CONVECTION-DOMINATED SOLUTE TRANSPORT IN UNSATURATED SOIL

Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China

Received Date: 2000-09-03
Publish Date: 2001-09-25

Abstract

Abstract

Convection-dispersion equation describing convection-dominated solute transport in unsaturated soil may be divided into two parts: convection and dispersion. They are resolved by the FCT (flux-corrected transport) algorithm and conventional alternate direction implicit finite difference method, respectively. The FCT algorithm includes two phases: one is low-order transport, in which excessive numerical diffusion may be introduced; the other is high-order flux-corrected, in which numerical dispersion and oscillation can be effectively eliminated through correcting (limiting) antidiffusion flux. Moreover, the moisture content is obtained by FUCG algorithm, which is able to conserve the mass balance. At last, the effectiveness of FCT algorithm is verified by the numerical examples.
- unsaturated soil,
- convection-dominated,
- FCT algorithm

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References(6)

References

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