Difference Modeling of Stream Pollution
Difference Modeling of Stream Pollution
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河流污染的差分建模
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
W. E. Dobbins
中科院分区：
文献类型：
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作者：
D. A. Bella;W. E. Dobbins
本文提出了一种用于BOD和溶解氧分布的数值分析的差分方法，该方法仅适用于一维问题。水力参数和BOD和溶解氧的源和汇的时空变化可以纳入模型开发。所开发的方法获得的结果相比，有利的可用的分析解决方案的结果。对于河口，该方法适用于分析BOD和溶解氧剖面在一个潮汐周期内的变化。这些配置文件从常用的准稳态方法得到的显着变化的证明。结果从潮汐速度变化的蔓延被证明有一个显着的影响BOD和溶解氧的配置文件。开发的方法应证明是有用的河口的潮汐变化是大的，BOD和溶解氧输入的强度的时间变化是很大的研究。
Finite-difference methods are developed for the numerical analysis of BOD and dissolved oxygen profiles confined to cases which may be treated as one-dimensional problems. Temporal and spatial variations of hydraulic parameters and sources and sinks of BOD and dissolved oxygen can be incorporated into the models developed. Results obtained by the methods developed compare favorably to the results of available analytical solutions. For estuaries, the methods are applicable to the analysis of the variations of BOD and dissolved oxygen profiles within a tidal cycle. Significant variations of these profiles from those obtained by the commonly used quasi steady-state approach are demonstrated. The spreading which results from the tidal velocity variation is shown to have a significant effect on the BOD and dissolved oxygen profiles. The methods developed should prove useful in studies of estuaries in which the tidal variations are large and the temporal variations in the strengths of the BOD and dissolved oxygen inputs are great.