This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1029/2009WR007873 in citations.
Please use the identifier: http://hdl.handle.net/2128/20653 in citations.
A grid refinement approach for a three-dimensional soil-root water transfer model
A grid refinement approach for a three-dimensional soil-root water transfer model
Three dimensional soil-root water transfer models require a fine soil and root discretization in order to obtain accurate results. This goes along with a considerable computational effort. One way of reducing the computational effort is the usage of grid refinement techniques. With such techniques i...
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Personal Name(s): | Schröder, T. |
---|---|
Tang, L. / Javaux, M. / Vanderborght, J. / Körfgen, B. / Vereecken, H. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC Agrosphäre; ICG-4 |
Published in: | Water resources research, 45 (2009) S. W10412 |
Imprint: |
Washington, DC
AGU
2009
|
Physical Description: |
W10412 |
DOI: |
10.1029/2009WR007873 |
Document Type: |
Journal Article |
Research Program: |
Terrestrische Umwelt Scientific Computing |
Series Title: |
Water Resources Research
45 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/20653 in citations.
Three dimensional soil-root water transfer models require a fine soil and root discretization in order to obtain accurate results. This goes along with a considerable computational effort. One way of reducing the computational effort is the usage of grid refinement techniques. With such techniques irregular grids are obtained that combine the accuracy of a fine grid resolution with a considerable reduction in computational costs. As a consequence of plant transpiration roots take up water and large soil water potential gradients around roots are created. Especially in these regions a fine soil discretization is needed. The root spatial distribution can therefore be used for refinement of the soil grid, a priori. Simulations show that the accuracy is indeed maintained for a priori refined grids but with reduced computational costs as compared to regular fine grids. Comparison with a well recognized a posteriori error estimate strengthen these results. |