Route towards droplet formation in laminar separated liquid/liquid flows: analysis and large-scale DNS
Speaker: Dr Lennon Ó'Náraigh, UCD
Time: 3.00PM
Date: Wednesday 8 October 2014, 3:00 PM
Location: Room H1.52, UCD Science Hub, University College Dublin,
Abstract:
We study two-phase liquid-liquid systems where the interface is linearly unstable to small-amplitude perturbations. Although no Squire's theorem exists for the present system, linear theory shows that the most-dangerous modes are typically two-dimensional, and that three-dimensional wavy interfaces are extremely difficult (and often impossible) to realise. Nevertheless, real interfaces do exhibit three-dimensional waves, since otherwise ligaments and droplets would never occur. Using weakly nonlinear theory and large-scale direct numerical simulation, we explain this paradox.
Tea/coffee will be provided.
Series: Applied and Computational Mathematics Seminar Series
Please Note: All are welcome and tea/coffee will be provided
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