@article{fdi:010065431,
  title = {{V}isualization and characterization of heterogeneous water flow in double-porosity media by means of x-ray computed tomography},
  author = {{P}eng, {Z}. and {D}uwig, {C}{\'e}line and {D}elmas, {P}. and {G}audet, {J}. {P}. and {S}trozzi, {A}. {G}. and {C}harrier, {P}. and {D}enis, {H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}hree-dimensional visualization of dynamic water transport process in soil by computed tomography ({CT}) technique is still limited by its low temporal resolution. {I}n order to monitor dynamically water transport in soil, a compromise has to be found between water flow velocity and {CT} acquisition time. {F}urthermore, an efficient image analysis method is necessary. {I}n this work, we followed the water transport in three dimensions by {CT} imaging across a double-porosity media constituted of two distinct materials, i.e. sand and porous clay spheres. {T}he {CT} acquisition parameters were adjusted to the water pore velocity so that we succeeded to register the water front displacement per time range of 25 min. {W}e also used the image subtraction method to extract water distribution evolution with time with a space resolution of . {B}oth time and space resolution are relatively high compared with other dynamic studies. {T}he water content profiles showed that the clay spheres remained in their dry state during water infiltration, while the water transport only occurred in the sand matrix. {T}hese results are consistent with macroscopic experiments. {T}he water front visualized by {CT} showed a non-symmetrical shape which was related to water transfer in non-equilibrium as shown by column displacement experiments.},
  keywords = {3{D} visualization ; {W}ater transport ; {C}omputed tomography ; {I}mage analysis ; {P}orous media},
  booktitle = {},
  journal = {{T}ransport in {P}orous {M}edia},
  volume = {110},
  numero = {3},
  pages = {543--564},
  ISSN = {0169-3913},
  year = {2015},
  DOI = {10.1007/s11242-015-0572-z},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065431},
}