Details

Autor(en) / Beteiligte

• Forterre, Y
• Pouliquen, O

Titel

Longitudinal vortices in granular flows

Ist Teil von

• Physical review letters, 2001-06, Vol.86 (26 Pt 1), p.5886-5889

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2001

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• 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.