ICMCS Seminar - Bacterial swarming through the lens of length scales

Condensed Matter lunchtime seminar

ICMCS Seminar - Bacterial swarming through the lens of length scales

Event details

Title: Bacterial swarming through the lens of length scales

Abstract:

Collective swarming of bacterial swimmers is a complex behaviour, often-seen in experiments. It consists of organisms moving rapidly in a thin film while creating flow structures on a scale much larger than individual cells. While computational models have been successful at modelling dilute suspensions of swimming bacteria, they have struggled to reproduce swarming.

To tackle this complexity, we introduce a new minimal model composed of three distinct length scales: the bacterial body length, the flagella length, and the screening length scale coming from the solid surface over which they swarm. This model is embedded in a thermalised hydrodynamic solver and validated through single swimmer experiments. We demonstrate that this numerical approach exhibits swarming behaviour. Our results are consistent with experiments, and the relatively low computational costs of this approach will allow future studies to probe more complex systems than previously considered, such as swarming in the vicinity of large obstacles or in porous media.

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https://ed-ac-uk.zoom.us/j/81211470751

Meeting ID: 812 1147 0751
Passcode: ICMCS123
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81211470751 [at] zoomcrc.com
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Meeting ID: 812 1147 0751
Passcode: 25173582
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About Condensed Matter lunchtime seminars

This is a weekly series of informal talks given primarily by members of the institute of condensed matter and complex systems, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..

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