Mud wrestling: modelling shear-thinning and thixotropic fluid flow

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• David Pritchard (Strathclyde)
• Monday 21 October 2013, 13:00-14:00
• MR5, Centre for Mathematical Sciences.

If you have a question about this talk, please contact Doris Allen.

Several common geophysical fluids, most notably mud, have a complex microstructure that gives them non-Newtonian properties including shear-thinning and thixotropy. It is not easy to pin down this behaviour experimentally, and it is often necessary in applications to employ simple rheological models in the hope that they capture the correct qualitative behaviour.

To explore the properties of such models, it is useful to investigate simple but revealing “benchmark” flow problems. I will discuss some of these, including non-Newtonian versions of the famous Stokes and Rayleigh problems. I will then describe ongoing work on shallow and slowly-varying non-Newtonian flow, along with possible extensions and applications to geological and environmental processes.

This talk is part of the Geophysical and Environmental Processes series.

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