2 papers
physics.flu-dyn2025
Normality-based analysis of multiscale velocity gradients and energy transfer in direct and large-eddy simulations of isotropic turbulence
Rahul Arun, Mostafa Kamal, Tim Colonius +1
Symmetry-based analyses of multiscale velocity gradients highlight that strain self-amplification (SS) and vortex stretching (VS) drive forward energy transfer in turbulent flows.…
physics.flu-dyn2024
Velocity gradient partitioning in turbulent flows
Rahul Arun, Tim Colonius
The velocity gradient tensor can be decomposed into normal straining, pure shearing and rigid rotation tensors, each with distinct symmetry and normality properties. We partition t…