流动环境中铅垂圆形负浮力排放的三维数值模拟  

3-D numerical simulation on round negative buoyant vertical jets in flowing environment

作　　者：杨中华[1] 槐文信[1] 

机构地区：[1]武汉大学水利水电学院,湖北武汉430072

出　　处：《水科学进展》2004年第3期286-290,共5页Advances in Water Science

基　　金：国家自然科学基金资助项目(50279037)~~

摘　　要：建立流动环境中圆形负浮力射流的三维k ε湍流模型,考虑浮力对射流的影响,结合试验资料进行数值计算,给出了不同射流比下的流线图和断面密度等值线图。发现了大射流比下喷口附近存在一个相对的低密度区以及射流撞击底部后向侧壁分流、密度分布呈现中间低两侧高的现象。The k-ε turbulence model is used to establish a mathematical model for round negative buoyant vertical jets in flowing environment. The model and the method are verified with the comparison between the calculated results and experimental data. Streamlines and density contours in different section are given. It is also found that there is a low density region behind the inlet and the jets branch off after impinging the boundary and the density near the side is higher than which in the middle of the channel.

关 键 词：流动环境 圆形垂直射流 负浮力射流 三维数值模拟 

分 类 号：O358[理学—流体力学]