Large-scale structures of scalar and velocity in a turbulent jet flow

Reijtenbagh, Jesse; Westerweel, J.; Water, Willem van de

doi:10.1103/physrevfluids.6.084611

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Cited by 2 publications

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“…Ridges of the FTLE field have been used by Xiang et al [13] to delineate vortex boundaries; they were observed to "faintly" organize the transport of tracers. The FTLE field has also been linked to the way passive tracers are dispersed in an experiment [14][15][16].…”

Section: -2mentioning

confidence: 99%

Transition to turbulence behind a traveling plate

Reijtenbagh,

Westerweel,

van de Water

2023

Phys. Rev. Fluids

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Section: -2mentioning

confidence: 99%

Transition to turbulence behind a traveling plate

Reijtenbagh,

Westerweel,

van de Water

2023

Phys. Rev. Fluids

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Variation of vortical structures across shock-wave/turbulent boundary-layer interaction region in a compression ramp flow

Dong,

Pan,

Tong

et al. 2024

Physics of Fluids

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This paper describes direct numerical simulations of a shock-wave/turbulent boundary-layer interaction (STBLI) process in a compression-ramp flow with a ramp angle of 24° and a free-stream Mach number of Ma∞=2.9. Spectral analysis, two-point cross correlation, convection velocity statistics, and individual vortex identification are used to elucidate the streamwise variation of multiscale turbulent structures in the STBLI process. Typical Lagrangian coherent structures in the turbulent boundary layer before the STBLI region are characterized as hairpin-like vortical structures, with heads that rise together with the separated mean flow in the STBLI region. In the downstream region, the reattached turbulent boundary layer has a two-layer structure. The outer layer is characterized as an intensification of large-scale velocity structures, which is attributed to the shock-wave-induced compression effect on vortical structures. A viscous-dominated layer develops independently in the vicinity of the wall, leading to a gradual restoration of the wall-shear effect that accumulates the inner-layer dynamics of small-to-moderate-scale turbulent motions.

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Large-scale structures of scalar and velocity in a turbulent jet flow

Cited by 2 publications

References 23 publications

Transition to turbulence behind a traveling plate

Transition to turbulence behind a traveling plate

Variation of vortical structures across shock-wave/turbulent boundary-layer interaction region in a compression ramp flow

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