Community Research and Development Information Service - CORDIS


The recently developed pseudo-transient model UL_FLOW (Mohrlok, 2005) based on a steady state analytical solution and a simple time dependent water balance was used to simulate the one-dimensional infiltration from a real sources and to compute residence times of a non-reactive solute within the soil profile between the source and the groundwater table. This model has been documented in the deliverable D14 (Mohrlok, 2005).

A sensitivity study was prepared in order to investigate the effect of different soil types, coarse sand and sandy loam, and soil thicknesses on the groundwater recharge rates and residence times for two different infiltration rate time series selected from neighbourhood 11 and 23 defined for UVQ simulations of Rastatt case study.

Particularly, the influence of the time step sizes, i.e. the temporal averaging, has been in the focus of that investigation. The developed extension to the model UL_FLOW_UVQ (Mohrlok, 2005) allows the calculations directly based on the UVQ output files and the neighbourhood data sets and produces output for all neighbourhoods. It has been applied to the Rastatt case study data sets and produced spatially varying time series of groundwater recharge rates and residence times.

The model was developed by Dr.Ulf Mohrlok (IfH).

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Institute for Hydromechanics, UNIKARL
Kaiserstr. 12
76131 Karlsruhe
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