19 research outputs found
Theories of binary fluid mixtures: From phase-separation kinetics to active emulsions
Binary fluid mixtures are examples of complex fluids whose microstructure and
flow are strongly coupled. For pairs of simple fluids, the microstructure
consists of droplets or bicontinuous demixed domains and the physics is
controlled by the interfaces between these domains. At continuum level, the
structure is defined by a composition field whose gradients which are steep
near interfaces drive its diffusive current. These gradients also cause
thermodynamic stresses which can drive fluid flow. Fluid flow in turn advects
the composition field, while thermal noise creates additional random fluxes
that allow the system to explore its configuration space and move towards the
Boltzmann distribution. This article introduces continuum models of binary
fluids, first covering some well-studied areas such as the thermodynamics and
kinetics of phase separation, and emulsion stability. We then address cases
where one of the fluid components has anisotropic structure at mesoscopic
scales creating nematic (or polar) liquid-crystalline order; this can be
described through an additional tensor (or vector) order parameter field. We
conclude by outlining a thriving area of current research, namely active
emulsions, in which one of the binary components consists of living or
synthetic material that is continuously converting chemical energy into
mechanical work
MS FT-2-2 7 Orthogonal polynomials and quadrature: Theory, computation, and applications
Quadrature rules find many applications in science and engineering. Their analysis is a classical area of applied mathematics and continues to attract considerable attention. This seminar brings together speakers with expertise in a large variety of quadrature rules. It is the aim of the seminar to provide an overview of recent developments in the analysis of quadrature rules. The computation of error estimates and novel applications also are described
Differential Models, Numerical Simulations and Applications
This Special Issue includes 12 high-quality articles containing original research findings in the fields of differential and integro-differential models, numerical methods and efficient algorithms for parameter estimation in inverse problems, with applications to biology, biomedicine, land degradation, traffic flows problems, and manufacturing systems