A NEW IMPROVEMENT ON FICKIAN DISPERSION MODEL
Fick离散模型的新改进

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.