@article{fdi:010081462,
  title = {{I}nfluence of bottom roughness and ambient pressure conditions on the emplacement of experimental dam-break granular flows},
  author = {{M}ontserrat, {S}. and {O}rdonez, {L}. and {T}amburrino, {A}. and {R}oche, {O}livier},
  editor = {},
  language = {{ENG}},
  abstract = {{G}eophysical granular flows occur at the surface of the {E}arth and other planets with reduced atmospheric pressure. {I}n this paper, we investigate the run-out of dam-break flows of particle-air mixtures with fine (d = 75 mu m) or coarse (d = 150 mu m) grains in a flume with different bottom roughness (delta) and vacuum degrees ({P}*). {O}ur results reveal an increase of the flow run-out as d/delta decreases for fine d = 75 mu m-particles, and run-out decreases with the dimensionless ambient pressure ({P}*) for a given d/delta. {I}n contrast, the run-out for coarser d = 150 mu m-particles, is almost invariant respect to {P}* and d/delta. {T}hese results show that autofluidization of fine-grained flows demonstrated by earlier works at ambient pressure also occurs at reduced pressure though being less efficient. {H}ence, autofluidization is a mechanism, among others, to explain long run-out of geophysical flows in different environments.},
  keywords = {{D}am-break ; {G}ranular flows ; {P}ore pressure ; {A}mbient pressure ; {F}luidization ; {S}ubstrate roughness},
  booktitle = {},
  journal = {{G}ranular {M}atter},
  volume = {23},
  numero = {3},
  pages = {57 [8 ]},
  ISSN = {1434-5021},
  year = {2021},
  DOI = {10.1007/s10035-021-01125-2},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081462},
}