Research Fellows Directory
Dr Vassilios Dallas
University of Leeds
My interests fall in the general topic of non-linear and statistical physics and my research focus on turbulence, statistical fluid mechanics and magnetohydrodynamics with applications to geophysics, astrophysics, atmospheric sciences, energy and flow control. My experience covers a range of approaches, from simple mathematical models to high fidelity numerical simulations on supercomputers, aiming for a deeper understanding of the fundamental processes in turbulent flows of fluids and plasmas.
Most natural phenomena are extremely complex, with turbulent dynamics under the effect of rotation, gravity, magnetic fields, etc. In such cases the interactions between nonlinear waves and vortices are pivotal to understand the complex dynamics of these phenomena. The rapid growth of computing power in recent years provides us the opportunity to integrate the fundamental study of all these effects and to test our theories against advanced numerical data.
Observations, experiments and numerical simulations have shown that rotation is one of the key aspects that determines the main characteristics of the creation of cyclones and the resulting magnetic fields of the planets. However, there is still lack of theory that quantitatively describes the various dynamical regimes under the influence of rotation. Therefore, in the duration of my Newton International fellowship I aim to understand the effect of rotation on the creation of cyclones and planetary magnetic fields within the context of geophysical and astrophysical flows. To tackle this goal there is an equal need for modelling, analytical estimates, numerical simulations and when possible relations with experiments and observations.