水利水电技术2017，Vol.48Issue(11)：1-6,62,7.DOI:10.13928/j.cnki.wrahe.2017.11.001
掺气水流不同粒径气泡运动特性研究
Study on movement characteristics of air-bubbles with different sizes in aerated flow
摘要
Abstract
With the relevant 3-D numerical simulation method and the discrete phase model (DPM),the movement characteristics of the air-bubbles with different sizes in the aerated flows in the high head vertical chute spillway tunnels and the spillway tunnels with ogee sections of various scales are simulated,and then the areas of the impacts from the air-bubbles with different sizes on the near wall aeration concentrations are analyzed,from which the study result can lay a basis for the scale effect of the aeration concentration.The analysis shows that the impacting length of the air-bubble is proportional to the flow velocity and is inversely proportional to the size of the air-bubble,while the smaller the bottom slope of the spillway tunnel is,the larger the impacting length of the air-bubble is to be,furthermore,the larger the radius of the ogee section of the spillway tunnel is,the larger the impacting length of the air-bubble is to be.关键词
泄水建筑物/掺气浓度/气泡粒径/DPM模型/缩尺效应Key words
discharge structure/aeration concentration/bubble size/DPM Model/scale effect分类
建筑与水利引用本文复制引用
陈文学,穆祥鹏,崔巍,何胜男..掺气水流不同粒径气泡运动特性研究[J].水利水电技术,2017,48(11):1-6,62,7.基金项目
中国水科院科研专项(水集KF0705) （水集KF0705）
