(147e) Study on Process Intensification of Granular Flow of Using Pulsed Load

The transition of particle systems between solid-like and fluid-like regimes is driven by changes in density and in applied states. In this respect, pulse loads in drive the unjamming transition have been proved to reduce the unconfined yield stress and cohesion, thus achieving effective particle fluidization. In the present work, we have studied the effects of vibration, aeration, and pulse aeration on powder discharge. We investigated the dynamic behavior of powder discharge in a 2D powder bed under vibration, aeration, and pulse aeration, respectively. The effect of powder physical properties and modulated pulse parameters (frequency, duty cycle, etc.) on particle fluidization was analyzed. The dynamic characteristics of powder discharge and agglomerates motion and deformation were studied using digital image processing and signal analysis. The effects of the modulated pulse load in improving slugging, suppressing channeling, breaking arches were revealed. The mechanism of modulated pulse load in improving powder flowability was revealed.