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Institut für Wasserbau - IWS

Selected Topics and International Network Lectures

16:00 Uhr
Anozie Ebigbo
Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, Institut für Wasserbau, Uni Stuttgart

Microbial clogging in the subsurface - A one-phase flow model and issues involved in extension to two-phase flow

In the talk, a Darcy scale model capable of simulating microbial transport and accumulation in saturated porous media is presented. The modelled processes include biomass growth and decay, transfer processes between the bulk fluid and the solid and advective/dipsersive transport of bacteria with the bulk fluid.

The model is intended to be used in simulations of microbial clogging in an underground CO2 storage site and thus two fluid phases need to be accounted for. The extension from one-phase to two-phase flow is not straight-forward. The second part of the presentation focuses on the issues that need to be included in a two-phase model such as the estimation of surface areas, capillary pressure and relative permeabilities.