@article{fdi:010076486,
  title = {{M}aximum solid phase concentration in geophysical turbulent gas-particle flows : insights from laboratory experiments},
  author = {{W}eit, {A}. and {R}oche, {O}livier and {D}ubois, {T}. and {M}anga, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he maximum solid phase concentration in geophysical turbulent gas-particle mixtures is essential for understanding the flow dynamics but is poorly known. {W}e present laboratory experiments on turbulent mixtures of air and ceramic particles generated in a vertical pipe. {T}he mixtures had maximum bulk concentrations {C}-max = 0.7-2.4 vol. % set by the onset of clustering and that increased with the degree of turbulence. {C}omparison with results of similar experiments with less dense (glass) particles reveals that {C}-max increases with the particle {R}eynolds number according to {C}-max = 0.78 x {R}e-p(0.17). {P}ublished results of experiments at specific {R}e-p in different configurations are consistent with our data, suggesting that the model for {C}-max may be generally applicable to turbulent mixtures. {F}rom our empirical laws we infer that natural turbulent gas-particle flows with {R}e-p similar to 10(2)-10(5) have maximum solid concentrations of similar to 2-5 vol. %.},
  keywords = {gas-particle mixtures ; turbulence ; clustering ; maximum particle ; concentration ; particle {R}eynolds number},
  booktitle = {},
  journal = {{G}eophysical {R}esearch {L}etters},
  volume = {46},
  numero = {12},
  pages = {6388--6396},
  ISSN = {0094-8276},
  year = {2019},
  DOI = {10.1029/2019gl082658},
  URL = {https://www.documentation.ird.fr/hor/fdi:010076486},
}