Subharmonic instability of a self-organized granular jet

被引：0

作者：

Kollmer, J. E. ^{[1
]}

Poeschel, T. ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Inst Multiscale Simulat, D-91054 Erlangen, Germany

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

关键词：

ONSET;

D O I：

10.1038/srep22520

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Downhill flows of granular matter colliding in the lowest point of a valley, may induce a self-organized jet. By means of a quasi two-dimensional experiment where fine grained sand flows in a vertically sinusoidally agitated cylinder, we show that the emergent jet, that is, a sheet of ejecta, does not follow the frequency of agitation but reveals subharmonic response. The order of the subharmonics is a complex function of the parameters of driving.

引用

页数：7

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