驻波管中的颗粒悬浮现象及其分析

Particles Suspension in a Standing Wave Tube And its Analysis

竖直放置的驻波管在共振频率下 ,位于其管底的微小颗粒群会在一定声压级下产生悬浮现象 ,即腾空而起 ,悬浮在波幅波节平面 .本文对该现象进行了实验研究 ,并在以往声流和声辐射压理论的基础上对这一现象进行了进一步的理论分析 .对该现象的认识将有利于进一步认识强声波对颗粒的作用 ,在粉尘。

Under the frequency of resonance, small particles which are in the bottom of an upright standing wave tube will rise and move to the node, or loop planes, and keep suspending there. The phenomenon is investigated in this paper. Based on the theories for acoustic steam and radiation pressure, the fact is examined experimentally and theorefically.