Amin Rahmat
University of Birmingham
Abstract:
Smoothed Particle Hydrodynamics (SPH) is a Lagrangian particle-based method, which is superior to other computational techniques in modelling large interfacial deformations. However, its traditional applications such as free surface flows, tsunamis, and fluid instabilities do not reveal the full capabilities of SPH. In this talk, I will demonstrate how SPH can be extended and hybridised with other modelling approaches to tackle complex interfacial phenomena that are beyond the reach of conventional numerical methods. Specifically, I will present a hybrid SPH–Mass Spring Model framework for simulating deformable soft solids, including microcapsules and stimuli-responsive hydrogels. I will demonstrate how the hybrid model resolves membrane rupture of microcapsules, as well as topological changes and evolving pore structures of hydrogels – the phenomena that pose significant modelling challenges. I will also show how SPH can be leveraged to model dynamic interfacial processes in solid materials, such as dissolution and agglomeration, offering new insights into morphological evolution in colloidal systems.
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