Dynamics of Interfaces in Complex Fluids and Complex Flows

cost group Photo

Cost Action MP1305 WG2+WG3 Meeting

A common and distinctive feature of soft materials like suspensions, emulsions, foams, gels, etc, is the co-existence of multiple phases and/or components. As a consequence, their structural complexity is characterized by interfaces, whose properties determine (often more relevantly than bulk properties) the macroscopic dynamics of these systems. The stability of foams and emulsions, for instance, relies crucially on surface active agents (surfactants) and their rheology results from the micro-mechanics of interfaces and films separating the elementary constituents (droplets and bubbles). The presence of interfaces, moreover, is known to affect profoundly the swimming/propulsion mechanism (and hence the collective behaviour) of microorganisms and artificial active particles.

Turbulent multi-phase and multi-component flows are of utmost importance for a plethora of natural and technological situations, like cavitation and emulsification, where the multiscale energy transfer and dissipation processes typical of high Reynolds number flows are intimately connected with the continuous breakage and formation of interfaces controlled by surface tension.

The goal of the workshop is to gather together scientists working in theoretical modelling and simulation of fluid systems where a non-trivial interplay emerges between flow and interfacial dynamics. In the spirit of the COST initiative, the meeting must be meant as an opportunity to stimulate discussions and promote collaborations on new topics at the crossroad between soft matter, active systems and turbulent flows.