What is recorded here?
Chantry, Tuckerman and Barkley simulated large domains of stress-free, sinusoidally forced Waleffe shear flow using four wall-normal modes. Near a fitted transition they found a growing turbulent fraction and gap statistics broadly consistent with directed-percolation scaling. A smaller simulated domain instead displayed long-lived transients and an apparent jump, illustrating how finite size can change the observed transition.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
This is numerical evidence for a particular truncated, drag-modified flow, not a proof of universal behavior of all wall-bounded or channel flows. The streamwise gap distribution near the chosen threshold did not exhibit the expected extended power law; the authors used an alternative correlation-length comparison and suggested finite distance from criticality. Some data collapses use directed-percolation exponents, and exponent relations make several comparisons non-independent. Threshold and exponent come from selected fits, not exact infinite-time results. The supplementary movie, raw simulations and independent fit replay were not examined.
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People and systems
Matthew Chantry; Laurette S. Tuckerman; Dwight Barkley
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.
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English catalogue narrative
Large-domain shear-flow simulation and turbulence-transition scaling
Chantry, Tuckerman and Barkley simulated large domains of stress-free, sinusoidally forced Waleffe shear flow using four wall-normal modes. Near a fitted transition they found a growing turbulent fraction and gap statistics broadly consistent with directed-percolation scaling. A smaller simulated domain instead displayed long-lived transients and an apparent jump, illustrating how finite size can change the observed transition.
Scientific scope
This is numerical evidence for a particular truncated, drag-modified flow, not a proof of universal behavior of all wall-bounded or channel flows. The streamwise gap distribution near the chosen threshold did not exhibit the expected extended power law; the authors used an alternative correlation-length comparison and suggested finite distance from criticality. Some data collapses use directed-percolation exponents, and exponent relations make several comparisons non-independent. Threshold and exponent come from selected fits, not exact infinite-time results. The supplementary movie, raw simulations and independent fit replay were not examined.
Reading status
This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.
People and systems
Matthew Chantry; Laurette S. Tuckerman; Dwight Barkley
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.