3 papers
physics.flu-dyn2026
An Optimal Seed Reveals the Dynamical Route to Spontaneous Splitting of Turbulent Puffs
Chihang Liu, Hao Ni, Jiashun Guan
The localized turbulence in pipe flow, known as puffs, is sustained by their proliferation. This process is crucial to the subcritical laminar-turbulent transition, a century-old f…
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…