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physics.flu-dyn2000
The decay of plane wave pulses with complex structure in a nonlinear dissipative medium
Sergei N. Gurbatov, Bengt O. Enflo, Galina V. Pasmanik
Nonlinear plane acoustic waves propagating through a fluid are studied using Burgers' equation with finite viscosity. The evolution of a simple N-pulse with regular and random init…
physics.flu-dyn2000
Threshold amplitudes for transition to turbulence in a pipe
Lloyd N. Trefethen, S. J. Chapman, Dan S. Henningson +3
Although flow in a circular pipe is stable to infinitesimal perturbations, it can be excited to turbulence by finite perturbations whose minimal amplitude shrinks as R goes to infi…