A grid refinement approach for a three-dimensional soil-root water transfer model

Schröder, T.; Javaux, M.; Vereecken, H.; Tang, L.; Vanderborght, J.; Körfgen, B.

doi:10.1029/2009WR007873

Journal Article

A grid refinement approach for a three-dimensional soil-root water transfer model

Schröder, T.FZJ* ; Tang, L. ; Javaux, M.FZJ* ; Vanderborght, J.FZJ* ; Körfgen, B.FZJ* ; Vereecken, H.FZJ*

2009
AGU Washington, DC

Water resources research 45, W10412 (2009) [10.1029/2009WR007873]

This record in other databases:

Please use a persistent id in citations: http://hdl.handle.net/2128/20653 doi:10.1029/2009WR007873

Abstract: 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.

Keyword(s): J

Classification:

Note: Record converted from VDB: 12.11.2012

Contributing Institute(s):

Research Program(s):

Appears in the scientific report 2009

Database coverage:
OpenAccess