摘要
为了解印刷涂布设备烘箱V型条缝喷嘴冲击射流流场分布及其影响因素,采用标准k-ε湍流模型,对喷嘴射流冲击移动壁面进行数值模拟。分析了喷嘴冲击射流壁面附近速度场和压力场分布情况,考虑了影响喷嘴冲击射流壁面附近速度分布的喷嘴宽度和高度等因素。研究结果表明:在冲击射流中,喷嘴距壁面的高度和喷嘴宽度对壁面附近速度分布影响较为明显;综合考虑各种因素,较理想的喷嘴高度是15 mm,相应的喷嘴宽度为2.5 mm。
In order to understand the impinging jet field distribution and influencing factor of printing and coating equipment oven V-shaped slot nozzle,with standard model of k-ε,numerical simulation was performed to the nozzle impinging jet on moving wall.The velocity and pressure field distribution near the moving wall was analyzed.The influencing factors of the impinging jet was considered,which include nozzle width and height,etc.The results showed that the height of the wall to nozzle and the nozzle width affect the velocity distribution near the wall evidently;considering kinds of factor,the ideal nozzle height is 15 mm,and the nozzle width is 2.5 mm.
出处
《包装工程》
CAS
CSCD
北大核心
2011年第3期28-32,共5页
Packaging Engineering
基金
广东省自然科学基金资助项目(8351503101000001)
广东省高等学校产学研结合示范基地项目(cgzhzd0717)
关键词
V型条缝喷嘴
冲击射流
k-ε湍流模型
数值模拟
V-shaped slot nozzle
Impinging jet
k-ε turbulence model
Numerical simulation
