Unsteady RANS and Large Eddy Simulation of the Flow and Heat Transfer in a Wall Bounded Pin Matrix

S. Benhamadouche; I. Afgan; F. Dehoux; R. Manceau

Unsteady RANS and Large Eddy Simulation of the Flow and Heat Transfer in a Wall Bounded Pin Matrix

S. Benhamadouche, I. Afgan, F. Dehoux, R. Manceau

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

Abstract

Four calculations, two using LES with respectively 18 and 76 million computational cells and two utilizing a URANS approach on a 2 million mesh with sophisticated first and second moment closure approaches; the Ø-model and the EB-RSM combined to the EB-GGDH, have carried out for the flow through a wall bounded pin matrix in a staggered arrangement with a heated bottom wall at a Reynolds number based on the gap velocity and the diameter of the pins equal to 10, 000. Comparisons of the pressure drop, the pressure coefficient distribution, the mean and rms values of the steam-wise velocity component and the Nusselt number distribution along the bottom wall showed clearly that using a first moment closure is not adequate for the present case. Although the wall-resolved LES with 76 million cells shows a superior behavior, the second moment closure exhibits very interesting results

Original language	English
Title of host publication	ICHMT DIGITAL LIBRARY, THMT Proceedings 2012
Publisher	Begell House Publishers Inc.
Publication status	Published - 24 Sept 2012
Event	In Proceedings Turbulence, Heat and Mass Transfer 7 - Palermo, Italy Duration: 23 Sept 2012 → 27 Sept 2012

Conference

Conference	In Proceedings Turbulence, Heat and Mass Transfer 7
City	Palermo, Italy
Period	23/09/12 → 27/09/12

Cite this

@inproceedings{d262da202e5b4fb39ccf3723cad9b083,

title = "Unsteady RANS and Large Eddy Simulation of the Flow and Heat Transfer in a Wall Bounded Pin Matrix",

abstract = "Four calculations, two using LES with respectively 18 and 76 million computational cells and two utilizing a URANS approach on a 2 million mesh with sophisticated first and second moment closure approaches; the {\O}-model and the EB-RSM combined to the EB-GGDH, have carried out for the flow through a wall bounded pin matrix in a staggered arrangement with a heated bottom wall at a Reynolds number based on the gap velocity and the diameter of the pins equal to 10, 000. Comparisons of the pressure drop, the pressure coefficient distribution, the mean and rms values of the steam-wise velocity component and the Nusselt number distribution along the bottom wall showed clearly that using a first moment closure is not adequate for the present case. Although the wall-resolved LES with 76 million cells shows a superior behavior, the second moment closure exhibits very interesting results",

author = "S. Benhamadouche and I. Afgan and F. Dehoux and R. Manceau",

year = "2012",

month = sep,

day = "24",

language = "English",

booktitle = "ICHMT DIGITAL LIBRARY, THMT Proceedings 2012",

publisher = "Begell House Publishers Inc.",

address = "United States",

note = "In Proceedings Turbulence, Heat and Mass Transfer 7 ; Conference date: 23-09-2012 Through 27-09-2012",

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TY - GEN

T1 - Unsteady RANS and Large Eddy Simulation of the Flow and Heat Transfer in a Wall Bounded Pin Matrix

AU - Benhamadouche, S.

AU - Afgan, I.

AU - Dehoux, F.

AU - Manceau, R.

PY - 2012/9/24

Y1 - 2012/9/24

N2 - Four calculations, two using LES with respectively 18 and 76 million computational cells and two utilizing a URANS approach on a 2 million mesh with sophisticated first and second moment closure approaches; the Ø-model and the EB-RSM combined to the EB-GGDH, have carried out for the flow through a wall bounded pin matrix in a staggered arrangement with a heated bottom wall at a Reynolds number based on the gap velocity and the diameter of the pins equal to 10, 000. Comparisons of the pressure drop, the pressure coefficient distribution, the mean and rms values of the steam-wise velocity component and the Nusselt number distribution along the bottom wall showed clearly that using a first moment closure is not adequate for the present case. Although the wall-resolved LES with 76 million cells shows a superior behavior, the second moment closure exhibits very interesting results

AB - Four calculations, two using LES with respectively 18 and 76 million computational cells and two utilizing a URANS approach on a 2 million mesh with sophisticated first and second moment closure approaches; the Ø-model and the EB-RSM combined to the EB-GGDH, have carried out for the flow through a wall bounded pin matrix in a staggered arrangement with a heated bottom wall at a Reynolds number based on the gap velocity and the diameter of the pins equal to 10, 000. Comparisons of the pressure drop, the pressure coefficient distribution, the mean and rms values of the steam-wise velocity component and the Nusselt number distribution along the bottom wall showed clearly that using a first moment closure is not adequate for the present case. Although the wall-resolved LES with 76 million cells shows a superior behavior, the second moment closure exhibits very interesting results

M3 - Conference contribution

BT - ICHMT DIGITAL LIBRARY, THMT Proceedings 2012

PB - Begell House Publishers Inc.

T2 - In Proceedings Turbulence, Heat and Mass Transfer 7

Y2 - 23 September 2012 through 27 September 2012

ER -

Unsteady RANS and Large Eddy Simulation of the Flow and Heat Transfer in a Wall Bounded Pin Matrix

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