Modelling the Flow of Yield-Stress Fluids in Porous Media |
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Authors: | Taha Sochi |
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Institution: | 1.Department of Physics and Astronomy,University College London,London,UK |
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Abstract: | Yield-stress is a problematic and controversial non-Newtonian flow phenomenon. In this article, we investigate the flow of
yield-stress substances through porous media within the framework of pore-scale network modelling. We also investigate the
validity of the Minimum Threshold Path (MTP) algorithms to predict the pressure yield point of a network depicting random
or regular porous media. Percolation theory as a basis for predicting the yield point of a network is briefly presented and
assessed. In the course of this study, a yield-stress flow simulation model alongside several numerical algorithms related
to yield-stress in porous media were developed, implemented and assessed. The general conclusion is that modelling the flow
of yield-stress fluids in porous media is too difficult and problematic. More fundamental modelling strategies are required
to tackle this problem in the future. |
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Keywords: | |
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