周边式二次沉淀池流态的计算模拟研究的数值方法

A New Computer Simulation Method for Flow Pattern of Peripheral Feed-Peripheral Effluent Secondary Clarifier

利用一种半解析半离散的数值方法来求解偏微分方程，从而确定二次沉淀池的流态。该方法具有精度高、速度快、占用计算机内存小的特点。所编制软件可在４８６微机上运行。计算结果与文献相比较，一致性很好，从而验证了本文方法的正确性。还给出了池型尺寸变化对池中心上部水流死区的影响，为具体设计者提供了参考依据。为进一步的优化设计创造了条件。

A new numerical method is used to solve the partial differential equation from which wecan know the secondary clarifier flow pattern.The program composed using this method needs lesscomputer memory and can be run in 486PC,Compared with the published data the calculated resultsshow excellent agreement.Moreover,the effects of the settler structure to the flow still area in theupper center part of the settler are given to help the later designer.