Sep 2026
The velocity gradient invariants in turbulent channel flow: An analysis based on proper orthogonal decomposition
The dynamical evolution of multi-scale topological characteristics in channel turbulence is examined based on direct numerical simulation. In the original flow field, the joint probability density function (PDF) constructed from the velocity-gradient tensor invariants Q and R exhibits a classic teardrop shape, wh...
Feng Liu, Jian Li, Wen-Yu Yan et al.
· Proceedings of the Instituti... · 0 citations