• 关键词：离散  离散模型  水质模型  水质  河流

• 基金项目：

• 周克钊
• 成都科技大学

• 摘要：为了克服传统Fick离散模型的缺陷,本文提出一种新的改进,即保留Fick模型的方程形式但增加一个参数的时空虚拟源模型。该模型与偏态严重的实测数据也能完美地符合,比传统Fick模型和许多非Fick模型优越。本文还对时空虚拟源模型作了理论探讨,并讨论了参数估计方法。

• Abstract：A modified Fickian dispersion model, imaginary source model, was developed. The new model took the same equation form as Fickian model, but a time and distance imagined source was used instead of a real one. The theoretical explanation and the experimental verification were provided and the prediction by the new model was consistent with the experimental data, though the latter was highly skewed.

• Key words：dispersion model  Fickian model  water quality  imagined source.

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