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Durham University

Research & business

Research lectures, seminars and events

The events listed in this area are research seminars, workshops and lectures hosted by Durham University departments and research institutes. If you are not a member of the University, but  wish to enquire about attending one of the events please contact the organiser or host department.


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Events for 30 September 2020

Adam Townsend: Microscale to macroscale in suspension mechanics


Complex fluids appear in many biological and industrial settings. A key feature is that their interesting macroscale behaviour derives from their complex microscale structure. In many cases, these fluids are suspensions - some viscous fluid with particles or fibres suspended within. For example, in polymeric fluids, flexible suspended fibres lead to non-Newtonian bulk responses such as shear thinning or viscoelasticity. When entangled or connected in networks, fibres form gels and disordered solids as is the case in important biological materials such as mucus.

These systems are interesting for mathematicians because the question is raised as to which scale is 'right' to investigate these fluids.

The project I have been working on for the last few years - modelling sperm swimming through mucus - argues that large-scale simulation of microscale fibres, interacting with fluid, allows us to bridge this gap.

In this talk, I give a brief overview of suspension mechanics, then I present our progress so far in modelling fibre suspensions - the challenges behind moving to 3D, how we created large networks for sperm-like swimmers to navigate through, as well as the interesting behaviour of fibres in other configurations. I will share my (honest!) experience of using computational infrastructure, as well as presenting avenues for the future.

Contact Christopher Prior for more information about this event.

DEI Online Seminar Series: Winter is coming: Fuel poverty in a Covid world

1:00pm to 2:00pm, Online over Zoom, Helen Stockton, NEA

Contact for more information about this event.