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physics.flu-dyn2025
Quantifying non-equilibrium pressure-gradient turbulent boundary layers through a symmetry-based framework
Wei-Tao Bi, Ke-Xin Zheng, Jun Chen +1
This study establishes a symmetry-based framework to quantify non-equilibrium processes in complex pressure gradient (PG) turbulent boundary layers (TBLs), using a Lie-group-inform…
physics.flu-dyn2023
A symmetry-based theory for the mean velocity profiles of turbulent boundary layers subjected to pressure gradient and historical turbulence effects
Tan-Tan Du, Jun Chen, Wei-Tao Bi +1
The pressure gradient has a significant influence on the mean-flow properties of turbulent boundary layers. Conventional analytical studies on PG turbulent boundary layers are cond…
physics.flu-dyn2023
Quantifying equilibrium pressure-gradient turbulent boundary layers via a symmetry approach
Wei-Tao Bi, Jun Chen, Zhen-Su She
We propose a theory for predicting the mean velocity and Reynolds shear and normal stresses profiles in the wake region of equilibrium adverse pressure-gradient (PG, APG) turbulent…