初沉池集气罩内气流形态的预测与通风方案的研究
Prediction of airflow pattern in gascollecting hood of primary settling tank in sewage plants and studies on ventilation schemes
摘要：
采用有限体积法和SIMPLE算法对某污水厂初沉池集气罩内的三维湍流进行了模拟。研究了进风口的形式、位置、尺寸以及排风口的位置等因素对速度场的影响。通过对几种不同形式流场流动特性的分析，得出了一些定性的结论。
关键词：初沉池 集气罩 湍流 数值模拟 机械通风 气流形态
Abstract：
Simulates the 3D air turbulent flow in gascollecting hood of primary settling tank of a sewage treatment plant with finite volume method and SIMPLE algorithm. Studies the effect of several factors, including shape, location and sizes of inlets, and location of outlets etc, on the velocity fields. Draws some qualitative conclusions according to the analysis of flow characteristics of different flow fields.
Keywords:primary settling tank, gascollecting hood, turbulent flow, numerical simulation, mechanical ventilation, airflow pattern