Turbulent puffs in square duct flow have finite lifetimes that scale as (Rec-Re)^(-1/2) below Re ~ 1450 and super-exponentially above, consistent with a noisy saddle-node bifurcation.
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Distinct Lifetime Scaling Laws of Turbulent Puff in Duct Flow
Turbulent puffs in square duct flow have finite lifetimes that scale as (Rec-Re)^(-1/2) below Re ~ 1450 and super-exponentially above, consistent with a noisy saddle-node bifurcation.