Publications des scientifiques de l'IRD

Delannay R., Valance A., Mangeney A., Roche Olivier, Richard P. (2017). Granular and particle-laden flows : from laboratory experiments to field observations. Journal of Physics D : Applied Physics, 50 (5), p. art. 053001 [40 p.]. ISSN 0022-3727.

Titre du document
Granular and particle-laden flows : from laboratory experiments to field observations
Année de publication
2017
Type de document
Article référencé dans le Web of Science WOS:000392393600001
Auteurs
Delannay R., Valance A., Mangeney A., Roche Olivier, Richard P.
Source
Journal of Physics D : Applied Physics, 2017, 50 (5), p. art. 053001 [40 p.] ISSN 0022-3727
This review article provides an overview of dry granular flows and particle fluid mixtures, including experimental and numerical modeling at the laboratory scale, large scale hydrodynamics approaches and field observations. Over the past ten years, the theoretical and numerical approaches have made such significant progress that they are capable of providing qualitative and quantitative estimates of particle concentration and particle velocity profiles in steady and fully developed particulate flows. The next step which is currently developed is the extension of these approaches to unsteady and inhomogeneous flow configurations relevant to most of geophysical flows. We also emphasize that the up-scaling from laboratory experiments to large scale geophysical flows still poses some theoretical physical challenges. For example, the reduction of the dissipation that is responsible for the unexpected long run-out of large scale granular avalanches is not observed at the laboratory scale and its physical origin is still a matter of debate. However, we believe that the theoretical approaches have reached a mature state and that it is now reasonable to tackle complex particulate flows that incorporate more and more degrees of complexity of natural flows.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Géologie et formations superficielles [064] ; Géophysique interne [066]
Description Géographique
CHILI ; PEROU ; INDONESIE ; ISLANDE ; ALASKA ; REUNION ; ANTILLES
Localisation
Fonds IRD [F B010068889]
Identifiant IRD
fdi:010068889
Contact