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NAME Résumé de rapport

Project ID: EVK3-CT-2001-00066
Financé au titre de: FP5-EESD
Pays: Netherlands

Models for 1D, 2D and 3D reactive transport in permeable sediments (FEMLAB)

Current reactive transport models for surface sediments have been specifically designed for (impermeable) muddy environments. They are one-dimensional (1D), focused on diffusive transport and only implement mass conservation. In sandy sediments however, adjective processes take over, either induced by bottom topography, groundwater discharge or biological activity (bio-irrigation). These adjective flows have a clear 3D signature, and as a result, reactive transport models for permeable sediments require a multi-dimensional approach, which combines both momentum (pore water flow) and mass conservation (reactive transport). In the NAME project, we have developed a suite of 1D/2D/3D reactive transport models for permeable sediments. Process models for fluid flow and reactive transport in highly- permeable near-shore environments were improved and/or newly developed. To this end, we used multi-purpose modelling software that allows fast multidimensional model prototyping, i.e. the Chemical Engineering Module of FEMLAB® ( in combination with MATLAB® ( Taking advantage of the unprecedented data management and visualisation capabilities built-in, this approach allows a far more economical and efficient way to develop reactive transport models, unreachable by conventional self-coded software. The model code of the 1D/2D/3D reactive transport models that were developed is made available to the scientific community and environmental agencies.

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