Excluded volume and order in a system of Brownian needles

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• Maria Bruna, DAMTP
• Friday 17 June 2022, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

If you have a question about this talk, please contact Prof. Jerome Neufeld.

We consider a system of hard-core interacting Brownian needles. Unlike point particles, the finite size and shape of each needle influence the system’s evolution. We explore the effects of excluded volume and anisotropy at the population level. Since needles exclude less volume if aligned, can excluded-volume effects alone induce order in the system? Starting from the stochastic particle system, we derive an integro-differential equation for the population density using the method of matched asymptotic expansions and conformal mapping. We present numerical simulations and discuss the limit of large rotational diffusion.

This talk is part of the Fluid Mechanics (DAMTP) series.

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