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Flow, Turbulence and Combustion
Published in: Flow, Turbulence and Combustion 4/2016

18-08-2016

Transport Mechanism of Interface Turbulence over Porous and Rough Walls

Authors: Yusuke Kuwata, Kazuhiko Suga

Published in: Flow, Turbulence and Combustion | Issue 4/2016

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Abstract

To understand turbulent transport mechanisms of interface turbulence over porous and rough walls, statistical analyses using direct numerical simulation (DNS) data are carried out at a bulk Reynolds number of 3000. The presently considered porous wall, whose porosity is 0.71, consists of interconnected staggered cube arrays and the rough wall has the same surface structure. Through quadrant and budget term analyses, the transport mechanisms of the plane averaged Reynolds stress are investigated and mutual dependency between turbulence and dispersion is elucidated. Moreover, the influence of the Kelvin-Helmholtz instability on turbulent transport is clarified.
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Metadata
Title
Transport Mechanism of Interface Turbulence over Porous and Rough Walls
Authors
Yusuke Kuwata
Kazuhiko Suga
Publication date
18-08-2016
Publisher
Springer Netherlands
Published in
Flow, Turbulence and Combustion / Issue 4/2016
Print ISSN: 1386-6184
Electronic ISSN: 1573-1987
DOI
https://doi.org/10.1007/s10494-016-9759-9

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