3 papers
physics.flu-dyn2025
Distinct Lifetime Scaling Laws of Turbulent Puff in Duct Flow
Jiashun Guan, Jianjun Tao
The spatio-temporal dynamics of localized turbulent puffs the characteristic transitional structures in square duct flows are investigated through direct numerical simulati…
physics.flu-dyn2025
The Onset of Metastable Turbulence in Pipe Flow
Jiashun Guan, Jianjun Tao
The onset of turbulence in pipe flow has been a fundamental challenge in physics, applied mathematics, and engineering for over 140 years. To date, the precursor of this laminar-tu…
physics.flu-dyn2023
A note on transition parameters defined with properties of fluid element
Jianjun Tao
Laminar-turbulent transitions occur at different Reynolds numbers for different flow configurations and different fluids. In order to study quantitatively the similarity among the…