[Comportement dynamique d'un flux granulaire rapide convergent]
Nous considérons un flux dilué de particules granulaires passant par un tube d'injection sous l'action de la gravité. Ce problème est similaire à celui d'un écoulement de flux à grande vitesse, ce qui constitue un problème classique dans l'étude des gaz compressibles. Contrairement à l'idée très répandue que le comportement des systèmes granulaires très dilué est qualitativement semblable à celui des gaz, nous montrons que les systèmes dilués granulaires peuvent présenter un type d'intermittences qui n'a pas d'analogue dans la dynamique des gaz.
We consider a dilute flow of granular particles passing through a nozzle under gravity. This setting is an analogue to high-speed nozzle flows, which is a classical problem in the study of compressible gases. Contrary to the widely held belief that the behavior of very dilute granular systems is qualitatively similar to that of gases, we show that dilute granular systems can exhibit a type of intermittency that has no analogue in gas dynamics.
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@article{CRMATH_2016__354_8_864_0,
author = {Guo, Wenxuan and Zhang, Qiang and Wylie, Jonathan J.},
title = {Dynamic behavior of convergent rapid granular flows},
journal = {Comptes Rendus. Math\'ematique},
pages = {864--868},
publisher = {Elsevier},
volume = {354},
number = {8},
year = {2016},
doi = {10.1016/j.crma.2016.05.009},
language = {en},
url = {http://www.numdam.org/articles/10.1016/j.crma.2016.05.009/}
}
TY - JOUR AU - Guo, Wenxuan AU - Zhang, Qiang AU - Wylie, Jonathan J. TI - Dynamic behavior of convergent rapid granular flows JO - Comptes Rendus. Mathématique PY - 2016 SP - 864 EP - 868 VL - 354 IS - 8 PB - Elsevier UR - http://www.numdam.org/articles/10.1016/j.crma.2016.05.009/ DO - 10.1016/j.crma.2016.05.009 LA - en ID - CRMATH_2016__354_8_864_0 ER -
%0 Journal Article %A Guo, Wenxuan %A Zhang, Qiang %A Wylie, Jonathan J. %T Dynamic behavior of convergent rapid granular flows %J Comptes Rendus. Mathématique %D 2016 %P 864-868 %V 354 %N 8 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2016.05.009/ %R 10.1016/j.crma.2016.05.009 %G en %F CRMATH_2016__354_8_864_0
Guo, Wenxuan; Zhang, Qiang; Wylie, Jonathan J. Dynamic behavior of convergent rapid granular flows. Comptes Rendus. Mathématique, Tome 354 (2016) no. 8, pp. 864-868. doi : 10.1016/j.crma.2016.05.009. http://www.numdam.org/articles/10.1016/j.crma.2016.05.009/
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