Turbulence & Vortex Dynamics

Overview

Using high-resolution direct numerical simulations, we investigate the structure and dynamics of turbulent and transitional flows with particular focus on vortex breakdown, helicity transport, and the role of geometry in shaping flow topology. Our studies span enclosed rotating flows (spherical Couette, Vogel–Escudier), particle-laden turbulence, and buoyancy-driven instabilities, connecting fundamental physics to geophysical and industrial applications.

Governing Equation

Methods

• Direct Numerical Simulation (DNS) at high Reynolds numbers
• Helicity-based diagnostics and topological flow analysis
• Spectral energy budgets and scale-by-scale decomposition
• Q-criterion and λ₂ vortex identification
• Spherical Couette and Vogel–Escudier flow configurations

Key Results