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- Title
Reply to comment by X. X. Zhang et al. on 'Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling'.
- Authors
Tracy, Saoirse R.; Daly, Keith R.; Roose, Tiina; Sturrock, Craig J.; Crout, Neil M. J.; Mooney, Sacha J.
- Abstract
In response to the comment raised by Zhang et al. (2016, doi: 10.1002/2015WR018432) we explore the differences in average velocity computed using slip and no-slip boundary conditions at the air water interface. We consider a porous medium in which the air phase acts to impede the movement of water rather than to lubricate it, a case closer to the observed distribution of water in our CT images. We find that, whilst the slip boundary condition may be a more accurate approximation, in cases where the air phase is seen to impede water movement the differences between the two approaches are negligible.
- Subjects
SOILS; WATER; AIR; LUBRICATED friction; X-ray computed microtomography
- Publication
Water Resources Research, 2016, Vol 52, Issue 7, p5691
- ISSN
0043-1397
- Publication type
Article
- DOI
10.1002/2016WR018699