对旋式轴流通风机变角度条件下特性匹配的研究

采用Realizablek-ε湍流模型和压力边界条件对对旋式轴流通风机从集流器到扩散器出口的内部流场进行了数值模拟。通过改变前后级叶轮叶片的安装角,揭示了其安装角变化对流量和压头的影响,使得两级叶轮压升更加合理。为提高对旋风机的运行效率和运行安全性提供了依据。

Study of Property Match for Counter-rotating Axial Flow Fan from Different Angle

Carries out numerical simulation of the whole flow field,it is from the inlet of the collector to the outlet of the diffuser,in counter-rotating axial flow fan with the realizable turbulent model and the pressure boundary conditions.It shows the effect on the flow rate and pressure energy by changing the established angles in the two stages,which makes the two impellers pressure rise more reasonable.The conclusion provides the basis for increasing the fan operational efficiency and safety.