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Cite Details

S. Assouline, V. Ciriello and D. M. Tartakovsky, "Estimation of intrinsic length scales of flow in unsaturated porous media", Water Resour. Res., vol. 53, no. 11, doi:10.1002/2017WR021629, pp. 9980-9987, 2017


Characteristic lengths govern processes related to flow in unsaturated porous media, e.g., during drainage or evaporation. One can estimate these lengths, i.e., air-entry pressure head and critical capillary head, from either a water retention curve (WRC) or a hydraulic conductivity function (HCF). We provide new analytical expressions for the characteristic lengths based on a linearized analysis of the WRC and HCF curves. These are then used to investigate the impact of model selection on length-scale estimates, to assess their sensitivity to model parameters, and to provide guidelines for the choice of the alternative expressions under flow scenarios of interest.

BibTeX Entry

author = {S. Assouline and V. Ciriello and D. M. Tartakovsky},
title = {Estimation of intrinsic length scales of flow in unsaturated porous media},
year = {2017},
urlpdf = {},
journal = {Water Resour. Res.},
volume = {53},
number = {11},
doi = {10.1002/2017WR021629},
pages = {9980-9987}