A model for the evolution of turbulent bulges

Meihong Sun; Seth Lichter

doi:10.1063/1.1590979

A model for the evolution of turbulent bulges

Meihong Sun^*, Seth Lichter

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

It is shown that vortices rising through a high-Reynolds number boundary layer can interact with the mean shear so as to yield a localized structure similar to the bulges seen in turbulent boundary layers. These bulges evolve so as to entrain irrotational flow into the boundary layer. It is also shown that vortices can initiate the evolution of detrainment, in which rotational fluid is ejected into the outer flow. The results of this work support the idea that horseshoe vortices can lead to the evolution of large-scale structure in the boudary layer.

Original language	English (US)
Pages (from-to)	2424-2432
Number of pages	9
Journal	Physics of Fluids
Volume	15
Issue number	8
DOIs	https://doi.org/10.1063/1.1590979
State	Published - Aug 2003

ASJC Scopus subject areas

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1063/1.1590979

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abstract = "It is shown that vortices rising through a high-Reynolds number boundary layer can interact with the mean shear so as to yield a localized structure similar to the bulges seen in turbulent boundary layers. These bulges evolve so as to entrain irrotational flow into the boundary layer. It is also shown that vortices can initiate the evolution of detrainment, in which rotational fluid is ejected into the outer flow. The results of this work support the idea that horseshoe vortices can lead to the evolution of large-scale structure in the boudary layer.",

author = "Meihong Sun and Seth Lichter",

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AB - It is shown that vortices rising through a high-Reynolds number boundary layer can interact with the mean shear so as to yield a localized structure similar to the bulges seen in turbulent boundary layers. These bulges evolve so as to entrain irrotational flow into the boundary layer. It is also shown that vortices can initiate the evolution of detrainment, in which rotational fluid is ejected into the outer flow. The results of this work support the idea that horseshoe vortices can lead to the evolution of large-scale structure in the boudary layer.

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A model for the evolution of turbulent bulges

Abstract

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