Dynamics of the perceived velocity gradient tensor and its modelling
PF Yang, E Bodenschatz, GW He, A Pumir, H Xu - Physical Review Fluids, 2023 - APS
We study the dynamics of the perceived velocity gradient tensor M constructed from four
tracer particles that initially form a regular tetrad of size r 0. The exact evolution equation of …
tracer particles that initially form a regular tetrad of size r 0. The exact evolution equation of …
Structure and role of the pressure Hessian in regions of strong vorticity in turbulence
PF Yang, H Xu, A Pumir, GW He - Journal of Fluid Mechanics, 2024 - cambridge.org
Amplification of velocity gradients, a key feature of turbulent flows, is affected by the non-
local character of the incompressible fluid equations expressed by the second derivative …
local character of the incompressible fluid equations expressed by the second derivative …