低频声波对水雾消散作用的实验研究

作者考查了低频声波(<50Hz)对于水雾消散的作用。通过建立声波消雾实验装置,测定了在水雾消散过程中,雾室内的声场分布、温度、消雾时间、雾滴谱的变化过程。实验结果表明声波作用对于水雾的消散具有明显的作用。并且,消雾的效果随着作用声波的频率和声压级(SPL)呈规律性的变化趋势。较低频率和较高声强的声波作用更有利于水雾的消散,在消雾的过程中温度起伏不大。而声致凝聚是声波消雾的主要因素之一。

Experiments on acoustic dissipation of water fog at low frequency

In this article, experiments on the acoustic dissipation of fog at low - frequency are developed. Through setting up the experiment equipment, we measured the sound distribution, the temperature, the dissipating time and the spectrum of fog particles. It is proved that the sound can accelerate the dissipation of water fog greatly. And, the dissipating speed of water fog regularly altered following the different frequency and the Sound Pressure Level (SPL) . The lower frequency and the higher SPL have better dissipating effect. During the dissipating process, the temperature altered slightly. Acoustic agglomeration is one of the main causes for the fog dissipation.