A DELAY-DIFFUSION DESCRIPTION FOR TWO-DIMENSIONAL CONTAMINANT DISPERSION
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摘要: 在污染物释放后的前期它的扩散过程受出口速度的影响而具有明显的记忆特性，本文将Ｒ．Ｓｍｉｔｈ［８］（１９８１）污染物纵向记忆描述理论推广到两维情况并给出了的解析表达式。Abstract: In the earlier stage of dispersion process,the rate of dispersion aSsociatedwith earlier discharge is relatively large because the memory term extends further back intime。 In order to investigate the early properties of two-dimensional dispersion,we proposethe delay-diffusion equation as following:which is based on the ansatz derived by Smith(198 1).The analytical expressions forD_(xx):,D_(yx),D_(xy) ,D_(yy) and,are obtained.
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Key words:
- shear dispersion /
- contaminant dispersion /
- analytical solution /
- eigenvalueproblem memory /
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