离心式超细空气分级机内腔流场分析

Study on Flowfields of Air Centrifugal Superfine Powder Classifier

采用ｋ－ε双方程湍流模型处理分级机内腔气流场问题，参照ＰＨＯＥＮＩＣＳ计算流体力学程序，对分级机内腔的气流场进行数值计算。并将数值计算结果与五孔球形探针的测量结果相比较。绘制分级机内腔气流场中三维速度、压力分布的数值计算结果与五孔球形探针测量结果的比较图谱。结果表明，测量流场的速度、压力分布与数值计算值吻合较好，从而说明数值计算的流体力学模型是合适的。

The air centrifugal superfine powder classifier flow-fields were predicted by the k-ε turbulence model developed for CFD (Computational Fluid Dynamics). The velocity fields and static pressure field predicted by PHOENICS are compared to relative components measured by 5-hole probe. The prediction results showed good agreement with experimental data.