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arXiv 2106.14864cond-mat.soft
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利用磁性颗粒增强振动颗粒通过窄缝的流动

On the use of magnetic particles to enhance the flow of vibrated grains through narrow apertures

C. Manuel Carlevaro, Marcelo N Kuperman, Sebastián Bouzat, Luis A Pugnaloni, Marcos A Madrid

摘要:

谷物通过狭窄的缝隙的流动面临着一个非凡的挑战:堵塞。减轻堵塞影响的策略,例如使用外部振动,始终是散装物料处理机械设计的一部分。最近已经表明,减少堵塞的一种方法是使用一小部分小颗粒作为添加剂。此外,一些工作报告,自排斥磁性颗粒可以通过狭窄的孔隙流动,几乎没有堵塞,这表明这些是优秀的候选人作为“润滑”添加剂的其他颗粒材料。在这项工作中,我们研究的效果,添加自排斥磁性粒子的样品中的二维颗粒。我们发现,与直觉相反,添加的磁性颗粒不一定有助于原始物种的流动。

英文摘要:

The flow of grains through narrow apertures posses an extraordinary challenge: clogging. Strategies to alleviate the effect of clogging, such as the use of external vibration, are always part of the design of machinery for the handling of bulk materials. It has recently been shown that one way to reduce clogging is to use a small fraction of small particles as an additive. Besides, several works reported that self-repelling magnetic grains can flow through narrow apertures with little clogging, which suggest these are excellent candidates as "lubricating" additives for other granular materials. In this work, we study the effect of adding self-repelling magnetic particles to a sample of grains in two-dimensions. We find that, in contrast with intuition, the added magnetic grains not necessarily aid the flow of the original species.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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