What is recorded here?
Xiong and colleagues simulated pressure-driven channel flow in wide periodic domains and followed localized disturbances into oblique turbulent bands. Their calculations showed band growth, break-up and splitting; near the lower end of their tested range an isolated seed could grow while interactions could still cause turbulence to decay. At higher Reynolds numbers splitting supported spreading in the finite simulations.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
This is numerical evidence for specified no-slip channel geometry, domain sizes, initial fields and finite simulation times. The reported approximately 660 threshold concerns growth of a particular isolated band seed; the authors place sustained spreading near 1000 under their studied conditions. These are different criteria, neither a universally exact transition nor a direct experimental determination. Periodic boundaries and band interactions affect survival; the lifetime sample contains only 20 initial states. No infinite-domain or infinite-time limit, raw simulation replay or universal directed-percolation exponent is established.
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People and systems
Xiangming Xiong; Jianjun Tao; Shiyi Chen; Luca Brandt
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
Turbulent-band growth and splitting in channel-flow simulations
Xiong and colleagues simulated pressure-driven channel flow in wide periodic domains and followed localized disturbances into oblique turbulent bands. Their calculations showed band growth, break-up and splitting; near the lower end of their tested range an isolated seed could grow while interactions could still cause turbulence to decay. At higher Reynolds numbers splitting supported spreading in the finite simulations.
Scientific scope
This is numerical evidence for specified no-slip channel geometry, domain sizes, initial fields and finite simulation times. The reported approximately 660 threshold concerns growth of a particular isolated band seed; the authors place sustained spreading near 1000 under their studied conditions. These are different criteria, neither a universally exact transition nor a direct experimental determination. Periodic boundaries and band interactions affect survival; the lifetime sample contains only 20 initial states. No infinite-domain or infinite-time limit, raw simulation replay or universal directed-percolation exponent is established.
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
Xiangming Xiong; Jianjun Tao; Shiyi Chen; Luca Brandt
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.