摘要
应用气水脉冲管道冲洗法冲洗管道时,进气喷嘴尺寸和安装位置对冲洗效果有很大的影响。作者采用CFD方法,对进气喷嘴尺寸和安装位置不同的管道两相流进行数值模拟,得到管道内水流对管道上/下壁面剪切力变化曲线。综合模拟结果得出,进气喷嘴尺寸为0.25 D、设置在管道中间时,能得到较好的冲洗效果。
Air-inlet nozzle size and installation location have a great influence on the flushing effect when cleaning pipeline uses air-water pulse pipeline flushing technology. CFD method is used to numerically simulate the two-phase flow for pipeline with different air-inlet nozzle sizes and installation locations by the authors and a curve of upper-walL/lower-wall shear stress is obtained. Comprehensive simulation results conclude that washing effect will be better while the air-inlet nozzle size is 0.25 D, setting in the middle of the pipeline.
出处
《净水技术》
CAS
2016年第6期96-99,共4页
Water Purification Technology
基金
十二五国家水体污染控制与治理重大专项(2012ZX07403-002)
上海市科委科研项目(15XD1521000)
哈尔滨工业大学城市水资源与水环境国家重点实验室开放基金项目(QA201613)
关键词
气水脉冲管道冲洗
进气喷嘴
计算流体力学(CFD)
数值模拟
壁面剪切力
air-water pulse pipeline flushing air-inlet nozzle computational fluid dynamics （CFD） numerical simulation wall shear stress
