摘要
利用计算流体力学的方法研究气刀冲击射流.应用FLUENT软件,采用可实现k-ε模型着重对气刀压力场进行数值模拟.数值计算结果揭示了气流刮锌过程中带钢面上的压力分布趋势,并与实验数据进行了比较,模拟结果与实验数据符合较好.这表明,用可实现k-ε模型来预测冲击射流是比较准确的.在此基础上,研究了影响镀锌层厚度的几个因素,发现一些规律,为带钢热镀锌机组设备的进一步研究和优化设计提供了参考和依据.
The CFD（computational fluid dynamics）method is used to research the turbulent planar impinging jet of air knife. With the application of FLUENT software, the realizable k-ε model is adopted to simulate the pressure field in particular. Numerical results illustrate the pressure variation on the wall. Compared with the experimentation, numerical results are in agreement with experimental ones. This indicates that the realizable k -ε model can accurately predict the impinging jet. Furthermore, several dominatiing factors influencing the coating thickness are researched and some regular patterns are discovered. They provide references and bases for further study and optimizing design of the hot galvanizing line.
关键词
气刀
冲击射流
可实现k-ε模型
数值模拟
压力场
air knife
impinging jet
realizable k-ε model
numerical simulation
pressure field
