Shear/Buoyancy Interaction in Wall Bounded Turbulent Flows

Alexander Blass; Sergio Pirozzoli; Roberto  Verzicco

doi:10.1007/978-3-030-22196-6_8

Shear/Buoyancy Interaction in Wall Bounded Turbulent Flows

Alexander Blass^*, Sergio Pirozzoli, Roberto Verzicco

^*Corresponding author for this work

Physics of Fluids

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic › peer-review

1 Citation (Scopus)

Abstract

In this paper we describe and compare two unstably stratified turbulent flows in a channel forced by pressure gradient and wall shear, respectively, with the aim of evidencing similarities and differences in the heat transfer and flow dynamics. In both cases we find that the combination of the mean flow with the thermal forcing produces an increase of the friction coefficient and a non–monotonic dependence of the heat transfer on the mean flow strength. This behaviour might be relevant for the prediction of the light–wind conditions in weather forecast or, more in general, for mixed convection applications.

Original language	English
Title of host publication	Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018
Editors	Ramis Örlü, Alessandro Talamelli, Joachim Peinke, Martin Oberlack
Publisher	Springer
Pages	47-54
Number of pages	8
ISBN (Electronic)	978-3-030-22196-6
ISBN (Print)	978-3-030-22195-9
DOIs	https://doi.org/10.1007/978-3-030-22196-6_8
Publication status	Published - 28 Aug 2019
Event	iTi 2018 Conference on Turbulence VIII 2018 - Centro Residenziale Universitario di Bertinoro, Bertinoro, Italy Duration: 5 Sep 2018 → 7 Sep 2018 Conference number: 8

Publication series

Name	Springer Proceedings in Physics
Volume	226
ISSN (Print)	0930-8989
ISSN (Electronic)	1867-4941

Conference

Conference	iTi 2018 Conference on Turbulence VIII 2018
Abbreviated title	iTi 2018
Country/Territory	Italy
City	Bertinoro
Period	5/09/18 → 7/09/18

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10.1007/978-3-030-22196-6_8

Cite this

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title = "Shear/Buoyancy Interaction in Wall Bounded Turbulent Flows",

abstract = "In this paper we describe and compare two unstably stratified turbulent flows in a channel forced by pressure gradient and wall shear, respectively, with the aim of evidencing similarities and differences in the heat transfer and flow dynamics. In both cases we find that the combination of the mean flow with the thermal forcing produces an increase of the friction coefficient and a non–monotonic dependence of the heat transfer on the mean flow strength. This behaviour might be relevant for the prediction of the light–wind conditions in weather forecast or, more in general, for mixed convection applications.",

author = "Alexander Blass and Sergio Pirozzoli and Roberto Verzicco",

year = "2019",

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doi = "10.1007/978-3-030-22196-6_8",

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editor = "Ramis {\"O}rl{\"u} and Alessandro Talamelli and Joachim Peinke and Martin Oberlack",

booktitle = "Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018",

note = "iTi 2018 Conference on Turbulence VIII 2018, iTi 2018 ; Conference date: 05-09-2018 Through 07-09-2018",

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Blass, A, Pirozzoli, S & Verzicco, R 2019, Shear/Buoyancy Interaction in Wall Bounded Turbulent Flows. in R Örlü, A Talamelli, J Peinke & M Oberlack (eds), Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018. Springer Proceedings in Physics, vol. 226, Springer, pp. 47-54, iTi 2018 Conference on Turbulence VIII 2018, Bertinoro, Italy, 5/09/18. https://doi.org/10.1007/978-3-030-22196-6_8

Shear/Buoyancy Interaction in Wall Bounded Turbulent Flows. / Blass, Alexander; Pirozzoli, Sergio; Verzicco, Roberto .

Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018. ed. / Ramis Örlü; Alessandro Talamelli; Joachim Peinke; Martin Oberlack. Springer, 2019. p. 47-54 (Springer Proceedings in Physics; Vol. 226).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic › peer-review

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T1 - Shear/Buoyancy Interaction in Wall Bounded Turbulent Flows

AU - Blass, Alexander

AU - Pirozzoli, Sergio

AU - Verzicco, Roberto

N1 - Conference code: 8

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Y1 - 2019/8/28

N2 - In this paper we describe and compare two unstably stratified turbulent flows in a channel forced by pressure gradient and wall shear, respectively, with the aim of evidencing similarities and differences in the heat transfer and flow dynamics. In both cases we find that the combination of the mean flow with the thermal forcing produces an increase of the friction coefficient and a non–monotonic dependence of the heat transfer on the mean flow strength. This behaviour might be relevant for the prediction of the light–wind conditions in weather forecast or, more in general, for mixed convection applications.

AB - In this paper we describe and compare two unstably stratified turbulent flows in a channel forced by pressure gradient and wall shear, respectively, with the aim of evidencing similarities and differences in the heat transfer and flow dynamics. In both cases we find that the combination of the mean flow with the thermal forcing produces an increase of the friction coefficient and a non–monotonic dependence of the heat transfer on the mean flow strength. This behaviour might be relevant for the prediction of the light–wind conditions in weather forecast or, more in general, for mixed convection applications.

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T3 - Springer Proceedings in Physics

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A2 - Talamelli, Alessandro

A2 - Peinke, Joachim

A2 - Oberlack, Martin

PB - Springer

T2 - iTi 2018 Conference on Turbulence VIII 2018

Y2 - 5 September 2018 through 7 September 2018

ER -

Shear/Buoyancy Interaction in Wall Bounded Turbulent Flows

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