TY  - JOUR
AU  - Schröder, T.
AU  - Tang, L.
AU  - Javaux, M.
AU  - Vanderborght, J.
AU  - Körfgen, B.
AU  - Vereecken, H.
TI  - A grid refinement approach for a three-dimensional soil-root water transfer model
JO  - Water resources research
VL  - 45
SN  - 0043-1397
CY  - Washington, DC
PB  - AGU
M1  - PreJuSER-5945
SP  - W10412
PY  - 2009
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000270709800002
DO  - DOI:10.1029/2009WR007873
UR  - https://juser.fz-juelich.de/record/5945
ER  -