SCALE INTERACTION IN A MIXING LAYER. THE ROLE OF THE LARGE-SCALE GRADIENTS

Daniele Fiscaletti; Antonio Attili; Fabrizio Bisetti; Gerrit E. Elsinga

SCALE INTERACTION IN A MIXING LAYER. THE ROLE OF THE LARGE-SCALE GRADIENTS

Daniele Fiscaletti, Antonio Attili, Fabrizio Bisetti, Gerrit E. Elsinga

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The interaction between scales is investigated in a turbulent mixing layer. The large-scale amplitude modulation of the small scales already observed in other works depends on the crosswise location. Large-scale positive fluctuations correlate with a stronger activity of the small scales on the low speed-side of the mixing layer, and a reduced activity on the high speed-side. However, from physical considerations we would expect the scales to interact in a qualitatively similar way within the flow and across different turbulent flows. Therefore, instead of the large-scale fluctuations, the large-scale gradients modulation of the small scales has been additionally investigated.

Original language	English (US)
Title of host publication	15th European Turbulence Conference 2015
State	Published - Aug 23 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: LaVision, Dantec Dynamics

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https://repository.kaust.edu.sa/bitstream/10754/576016/1/263.pdf

Cite this

@inproceedings{05aecec71ae94fbda34ef3db4cb44bc2,

title = "SCALE INTERACTION IN A MIXING LAYER. THE ROLE OF THE LARGE-SCALE GRADIENTS",

abstract = "The interaction between scales is investigated in a turbulent mixing layer. The large-scale amplitude modulation of the small scales already observed in other works depends on the crosswise location. Large-scale positive fluctuations correlate with a stronger activity of the small scales on the low speed-side of the mixing layer, and a reduced activity on the high speed-side. However, from physical considerations we would expect the scales to interact in a qualitatively similar way within the flow and across different turbulent flows. Therefore, instead of the large-scale fluctuations, the large-scale gradients modulation of the small scales has been additionally investigated.",

author = "Daniele Fiscaletti and Antonio Attili and Fabrizio Bisetti and Elsinga, {Gerrit E.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: LaVision, Dantec Dynamics",

year = "2015",

month = aug,

day = "23",

language = "English (US)",

booktitle = "15th European Turbulence Conference 2015",

}

TY - GEN

T1 - SCALE INTERACTION IN A MIXING LAYER. THE ROLE OF THE LARGE-SCALE GRADIENTS

AU - Fiscaletti, Daniele

AU - Attili, Antonio

AU - Bisetti, Fabrizio

AU - Elsinga, Gerrit E.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: LaVision, Dantec Dynamics

PY - 2015/8/23

Y1 - 2015/8/23

N2 - The interaction between scales is investigated in a turbulent mixing layer. The large-scale amplitude modulation of the small scales already observed in other works depends on the crosswise location. Large-scale positive fluctuations correlate with a stronger activity of the small scales on the low speed-side of the mixing layer, and a reduced activity on the high speed-side. However, from physical considerations we would expect the scales to interact in a qualitatively similar way within the flow and across different turbulent flows. Therefore, instead of the large-scale fluctuations, the large-scale gradients modulation of the small scales has been additionally investigated.

AB - The interaction between scales is investigated in a turbulent mixing layer. The large-scale amplitude modulation of the small scales already observed in other works depends on the crosswise location. Large-scale positive fluctuations correlate with a stronger activity of the small scales on the low speed-side of the mixing layer, and a reduced activity on the high speed-side. However, from physical considerations we would expect the scales to interact in a qualitatively similar way within the flow and across different turbulent flows. Therefore, instead of the large-scale fluctuations, the large-scale gradients modulation of the small scales has been additionally investigated.

UR - http://hdl.handle.net/10754/576016

UR - http://www.etc15.nl/proceedings/proceedings/documents/263.pdf

M3 - Conference contribution

BT - 15th European Turbulence Conference 2015

ER -

SCALE INTERACTION IN A MIXING LAYER. THE ROLE OF THE LARGE-SCALE GRADIENTS

Abstract

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