Topical Collection: Physics - Interfaces, Mixing and Non-Equilibrium Dynamics

Articles already published in this topical collection

Interfaces and mixing and their non-equilibrium dynamics control a broad range of processes in nature and technology, at astrophysical and at molecular scales, including supernovae and fusion, planetary convection and chemistry-driven fluids, material transformation under impact and nano-fabrication. Addressing the societal challenges posed by alternative energy sources, efficient use of non-renewable resources, and purification of water requires a better understanding of the non-equilibrium dynamics, interfaces and mixing.

Interfacial transport and mixing are non-equilibrium processes coupling kinetics to meso- and macroscopic scales. They are exceedingly challenging to study. Their dynamics often involve sharp changes of vector and scalar fields, and may also include strong accelerations and shocks, radiation transport and chemical reactions, diffusion of species and electric charges, among other effects. Interfacial transport and mixing are inhomogeneous, anisotropic, non-local, and statistically unsteady. At macroscopic scales, their spectral and invariant properties differ substantially from those of canonical turbulence. At molecular and meso-scales, the non-equilibrium dynamics depart dramatically from the standard scenario given by Gibbs ensemble averages and the quasi-static Boltzmann equation. At the same time, non-equilibrium transport may lead to self-organization and order, thus offering new opportunities for the diagnostics. Capturing properties of interfaces and mixing can aid better understanding of the fundamental of Eulerian and Lagrangian dynamics, and developing methods of control of non-equilibrium transport in nature and technology.

Significant success has been recently achieved in the understanding of interfaces and mixing and their non-equilibrium dynamics on the sides of theory (including new approaches for handling multi-scale, non-local and statistically unsteady dynamics, and discoveries of new fluid instabilities and new mechanisms for interface stabilization), numerical simulations (including Lagrangian and Eulerian methods for large-scale modeling of complex processes in fluids, plasmas and materials) and experiment (including the high Reynolds number flows in fluids and plasmas, and their advanced diagnostics at laboratory scales, and the capturing the interfacial transport at molecular scales). This success opens new opportunities for studies of fundamentals of interfaces and mixing and their non-equilibrium dynamics, and for developing a unified description of particles and fields on the basis of synergy of theory, experiment, and simulations. This is the right moment to apply the fundamentals of non-equilibrium dynamics, interfaces and mixing for addressing contemporary challenges of modern science, technology and society.

The Collection will be focused on fundamental properties of interfaces and mixing and non-equilibrium dynamics, from kinetic to macroscopic scales. It will provide the unique opportunity to bring together scientists from different areas of fluid dynamics, applied mathematics, statistics, chemistry and material science. The Collection will motivate the discussions of rigorous mathematical problems, theoretical approaches and state-of-the-art numerical simulations along with advanced experimental techniques and technological applications. The contributing authors are key experts from universities and national research laboratories, and from national and international communities.

The Editors expect the Collection to explore and assess the state-of-the-art in interfaces and mixing and the non-equilibrium transport, and to chart new directions of the interdisciplinary research for the future.

Guest Editor

  • Professor Snezhana I. Abarzhi

Papers must describe original research and must not be simultaneously submitted to a journal or a conference with proceedings.

All submissions should follow the instructions available at:

Authors can directly submit their papers at During the submission procedure, please select the title of this Topical Collection from the section/category (drop down menu) in Editorial Manager.