简介：Abstract

Turbulence is ubiquitous and it plays a key role in several biological, chemical and physical processes; from the oceans to the atmosphere, as well as in many industrial processes, the presence of turbulence is highly relevant as it can enhance, by orders of magnitude, heat and mass mixing and transport coefficients. Turbulence is also a classical paradigmatic example of a deterministic chaotic system, where a broad range of length- and time-scales interact with each other and play a key role in the dynamics.  Because of the strong relevance for many outstanding applications and the fascinating scientific challenges, in recent years, major experimental, numerical and theoretical efforts were made in order to better understand the statistical properties of turbulent multiphase flows, i.e. turbulent flows where the fluid phase is made of two different substances, e.g. solid particles or fluid droplets dispersed in another fluid. How does particulate matter get transported in turbulence? How do dense multiphase fluids behave under turbulence? This presentation will provide a brief review of the work that we conducted in these areas in order to deepen our level of fundamental understanding on these systems.  Interesting directions for future research will also be briefly discussed.

报告人介绍：Brief Biography

Federico Toschi is full professor at the departments of Applied Physics and of Mathematics and Computer Science at Eindhoven University of Technology (TU/e). His research focuses on the emerging complexity in challenging multi-scale problems at the crossroad between statistical physics, fluid mechanics, soft condensed matter and bio-physics. How do small-scale interactions and forces lead to large-scale complexity and chaos? How to analytically and numerically model complex flow problems? Prof. Toschi’s research employs experimental, numerical and theoretical methods and covers -amongst others- fluid dynamics turbulence; lagrangian turbulence; thermal convection; complex fluids; soft condensed matter; active matter; crowd dynamics; scientific computing and Lattice Boltzmann methods.  Several of Prof. Toschi’s research topics are strongly interdisciplinary and involve pushing the boundaries of physics across different disciplines. In the computational aspects of his work he pursues innovation of numerical methods as well as large-scale, massively parallel, numerical simulations. His research is embedded in the 4TU Centre of Excellence for Multiscale Phenomena, the JMBC Burgerscentrum for fluid dynamics, and the Eindhoven Multiscale Institute. He teaches general courses on fluid mechanics, mathematical and computational physics, dynamical systems and chaos for Applied Physics BSc and MSc students. He served the scientific community by chairing two COST Action on “Particles in turbulence” and “Flowing matter” and is editor of the Journal of Turbulence.