Date: Wednesday 3rd of October 2018, 14:00.
Location: INB3305 (Isaac Newton Building).

‘Modelling multicomponent fluid flows with the lattice Boltzmann method’

by Halim Kusumaatmaja, Department of Physics, Durham University, Durham, UK.

Abstract:

I will present a free energy lattice Boltzmann approach to simulate multicomponent fluid flows. The method is flexible, as it allows different number of fluid components to be implemented easily. I will also show how high density ratios between the liquid and gas components can be realised. Focusing on ternary fluid systems, I will then discuss several applications of the method. First, I will discuss the dynamics of drops moving across liquid infused surfaces. These are liquid repellent surfaces made by infusing a lubricant into porous or rough solid surfaces. Second, I will present collision dynamics between two immiscible drops. We are able to capture bouncing, adhesive and insertive regimes, in agreement with experimental observations. Third, I will show our numerical study on generating emulsion droplets using a microfluidic channel. I will demonstrate the rich morphologies that can be achieved by varying the fluid surface tensions and flow rates.