Longitudinal Vortices in Granular Flows

Authors :: Olivier Pouliquen
Yoël Forterre
Institut universitaire des systèmes thermiques industriels (IUSTI)
Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)
Source :: Physical Review Letters, Physical Review Letters, American Physical Society, 2001, 86, pp.5886-5889. ⟨10.1103/PhysRevLett.86.5886⟩, Physical Review Letters, 2001, 86, pp.5886-5889. ⟨10.1103/PhysRevLett.86.5886⟩
Publication Year :: 2001
Publisher :: The American Physical Society, 2001.
Abstract: We present a new instability observed in rapid granular flows down rough inclined planes. For high inclinations and flow rates, the free surface of the flow experiences a regular deformation in the transverse direction. Measurements of the surface velocities imply that this instability is associated with the formation of longitudinal vortices in the granular flow. From the experimental observations, we propose a mechanism for the longitudinal vortex formation based on the concept of granular temperature.<br />Comment: 4 pages, 4 figures

Language :: English
ISSN :: 00319007 and 10797114
Database :: OpenAIRE
Journal :: Physical Review Letters, Physical Review Letters, American Physical Society, 2001, 86, pp.5886-5889. ⟨10.1103/PhysRevLett.86.5886⟩, Physical Review Letters, 2001, 86, pp.5886-5889. ⟨10.1103/PhysRevLett.86.5886⟩
Accession number :: edsair.doi.dedup.....69c33553cf13b27dc1db84f2179c9e70
Full Text :: https://doi.org/10.17877/de290r-295