对旋式轴流通风机的复杂度分析

Complexity analysis of contra-rotating axial flow fan

通过计算KDF-5型通风机2个工况下的L-Z复杂度及给出不同工况下复杂度的变化趋势图,得出通风机级间气流脉动信号的复杂性最小,振动信号的复杂度最大并且接近随机系统;噪声的复杂性随流量减小而增大,气流脉动和振动的复杂性随流量减小呈现出先减小后增大的结论。

The L-Z complexity of KDF-5 axial fan was calculated at two operation modes and the variation tendency of comPlexity at different operation modes were obtained. It was concluded that the pulsation signal of interstage airflow was the least complex, and the vibration signal was the most complex and neared the random system. In addition, it was obtained that the noise became more and more complex with the decrease in flow, and the airflow pulsation and vibration became first less complex and then more complex with the decrease in flow.