静叶片数对动静相干效应影响的实验研究

he rotor/stator interaction effect is experimentally studied in a straight blade agitator using particle image velocimetry (PIV), especially in the situation with low rotational speed. The cases with different number of stator blades are investigated in series to study its influence on the unsteady flow. A clear vortex is observed on the suction surface of the stator blade, an ensemble average method is used to get the time average flow field when the rotor is in different phase positions. The vortex in the low speed area at the suction surface of the stator blade is strongly relative to the number of stator blade. Streamline and vorticity of the flow field are also analyzed to help studying the effect.