- Physics of fractals and spirals.
- Dissipation properties of near-singular flow structures and their crucial dependence on the geometry of these structures.
- Direct numerical simulations and investigations of small-scale near-singular structures, for example in vortex tubes. The theorem of self-similar streamlines relates the Kolmogorov capacity of spiral-helical streamlines to singularity properties of vortex tubes. Geometrical eduction of vortex tubes independently of their enstrophy levels.
- Scalar interfaces and Eulerian and Lagrangia n statistics in various flows with va rious spatial and time structures: superpositions of random Fourier modes, steady and unsteady vortex tubes, DNS turbulence, chaotic advection.
- Large-eddy simulations, kinematic simulations and stochastic models of turbulent diffusion in homogeneous and stratified turbulence. Fluid elements and inertial particles.
- Wind tunnel experiments.
- Combustion: flamelet-vortex interactions and reaction-diffusion systems. G-equation.
- Ocean waves: geometry and equilibrium range wind-wave spectra.
- Fractals, spirals, wavelets and intermittency. Burgers turbulence. Energy transfer during shear-layer instabilities.
- Financial fluctuations.
- Fundamental, experimental studies in fluid mechanics with particular emphasis on turbulence.
- Turbulent shear layers with changing boundary conditions such as Reynolds number, roughness.
- Control of wall-bounded and separating shear layers.
- Pressure fluctuations.
- Superfluid turbulence, particularly the energy and pressure spectra.
- Mathematical tools for turbulence studies.
Recent Papers
Cafiero G. & Vassilicos J.C., Non-equilibrium turbulence scalings and self-similarity in turbulent planar jets, Proc. R. Soc. Lond. A, 475, 20190038 --> PDF, Web Link
Alves Portela F., Papadakis G. & Vassilicos J.C., Turbulence dissipation and the role of coherent structures in the near wake of a square prism, Phys. Rev. Fluids, 3, 124609 --> PDF, Web Link
Başbuğ S., Papadakis G. & Vassilicos J.C., Reduced mixing time in stirred vessels by means of irregular impellers, Phys. Rev. Fluids, 3, 084502 --> PDF, Web Link
Yasuda T. & Vassilicos J.C., Spatio-temporal intermittency of the turbulent energy cascade, J. Fluid Mechanics, 853, 235--252 --> PDF, Web Link
Zheng S., Bruce P.J.K., Graham J.M.R. & Vassilicos J.C., Weakly sheared turbulent flows generated by multiscale inhomogeneous grids, J. Fluid Mechanics, 848, 788--820 --> PDF, Web Link