壅塞空化与射流空化噪声谱特性的实验研究

Experimental Investigation on the Noise Spectrum Features of Choking-Cavitation and Jet-Cavitation

水力空化已成为一种很有潜力的水处理技术。利用水听器采集空化噪声信号,通过对比分析不同喷嘴产生的空化噪声的功率谱特性,得出壅塞空化器具有宽频高能量平台的功率谱曲线,特别适合于水动力空化处理污水和净化水等领域。

Hydrodynamic cavitation has been a potential technology of water treatment. By collecting cavitation noise signal with hydrophone and analyzing comparatively the features of power spectrum of cavitation noises produced by different nozzles, it is obtained that the choking cavitator has a flat roof in power spectrum curve which is a broadband and high energy. So the choking cavitator is suitable especially for hydrodynamic cavitation treating waste water and purifying water.