技术中心

【英文篇名】 Prediction of airflow pattern in gas?collecting hood of primary settling tank in sewage plants and studies on ventilation schemes 【作者中文名】 张伟; 郭春梅; 张志刚; 吕祥翠; 【作者英文名】 By Zhang Wei; Guo Chunmei; Zhang Zhigang and Lü XiangcuiTianjin University; Tianjin; China; 【作者单位】 天津大学; 天津城市建设学院; 【文献出处】 暖通空调, Heating Ventilating 集气罩; 湍流; 数值模拟; 机械通风; 气流形态; 【英文关键词】 primary settling tank; gas?collecting hood; turbulent flow; numerical simulation; mechanical ventilation; airflow pattern; 【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。 【英文摘要】 Simulates the 3?D air turbulent flow in gas?collecting 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.