Study of three LES subgrid-scale turbulence models for predictions of heat and mass transfer in large-scale compartment fires

A. C.Y. Yuen; G. H. Yeoh; V. Timchenko; S. C.P. Cheung; T. Chen

doi:10.1080/10407782.2016.1139903

Study of three LES subgrid-scale turbulence models for predictions of heat and mass transfer in large-scale compartment fires

A. C.Y. Yuen
, G. H. Yeoh
, V. Timchenko
, S. C.P. Cheung
, T. Chen

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

34 Citations (Scopus)

Abstract

ABSTRACT: Numerical assessment was performed to investigate the wall-adaptive features offered by two subgrid-scale (SGS) turbulence models: Wall-Adapting Local Eddy Viscosity (WALE) and Vreman against the Smagorinsky model. The gas temperature and velocity field predictions were enhanced using WALE over Smagorinsky, especially at the flaming and near-wall regions since WALE considers both strain and rotation rates of the turbulent structure and the turbulent viscosity approaches zero at the wall. Conversely, the simulation results by Vreman were under-predicted against the experimental data. The WALE model could notably enhance the simulation accuracy for large-scale compartment fires due to significant improvements of the flow diffusivity modeling. © 2016, Copyright © Taylor & Francis Group, LLC.

Original language	English
Pages (from-to)	1223-1241
Journal	Numerical Heat Transfer; Part A: Applications
Volume	69
Issue number	11
DOIs	https://doi.org/10.1080/10407782.2016.1139903
Publication status	Published - 2 Jun 2016
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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10.1080/10407782.2016.1139903

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title = "Study of three LES subgrid-scale turbulence models for predictions of heat and mass transfer in large-scale compartment fires",

abstract = "ABSTRACT: Numerical assessment was performed to investigate the wall-adaptive features offered by two subgrid-scale (SGS) turbulence models: Wall-Adapting Local Eddy Viscosity (WALE) and Vreman against the Smagorinsky model. The gas temperature and velocity field predictions were enhanced using WALE over Smagorinsky, especially at the flaming and near-wall regions since WALE considers both strain and rotation rates of the turbulent structure and the turbulent viscosity approaches zero at the wall. Conversely, the simulation results by Vreman were under-predicted against the experimental data. The WALE model could notably enhance the simulation accuracy for large-scale compartment fires due to significant improvements of the flow diffusivity modeling. {\textcopyright} 2016, Copyright {\textcopyright} Taylor \& Francis Group, LLC.",

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Study of three LES subgrid-scale turbulence models for predictions of heat and mass transfer in large-scale compartment fires. / Yuen, A. C.Y.; Yeoh, G. H.; Timchenko, V. et al.
In: Numerical Heat Transfer; Part A: Applications, Vol. 69, No. 11, 02.06.2016, p. 1223-1241.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Study of three LES subgrid-scale turbulence models for predictions of heat and mass transfer in large-scale compartment fires

AU - Yuen, A. C.Y.

AU - Yeoh, G. H.

AU - Timchenko, V.

AU - Cheung, S. C.P.

AU - Chen, T.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2016/6/2

Y1 - 2016/6/2

N2 - ABSTRACT: Numerical assessment was performed to investigate the wall-adaptive features offered by two subgrid-scale (SGS) turbulence models: Wall-Adapting Local Eddy Viscosity (WALE) and Vreman against the Smagorinsky model. The gas temperature and velocity field predictions were enhanced using WALE over Smagorinsky, especially at the flaming and near-wall regions since WALE considers both strain and rotation rates of the turbulent structure and the turbulent viscosity approaches zero at the wall. Conversely, the simulation results by Vreman were under-predicted against the experimental data. The WALE model could notably enhance the simulation accuracy for large-scale compartment fires due to significant improvements of the flow diffusivity modeling. © 2016, Copyright © Taylor & Francis Group, LLC.

AB - ABSTRACT: Numerical assessment was performed to investigate the wall-adaptive features offered by two subgrid-scale (SGS) turbulence models: Wall-Adapting Local Eddy Viscosity (WALE) and Vreman against the Smagorinsky model. The gas temperature and velocity field predictions were enhanced using WALE over Smagorinsky, especially at the flaming and near-wall regions since WALE considers both strain and rotation rates of the turbulent structure and the turbulent viscosity approaches zero at the wall. Conversely, the simulation results by Vreman were under-predicted against the experimental data. The WALE model could notably enhance the simulation accuracy for large-scale compartment fires due to significant improvements of the flow diffusivity modeling. © 2016, Copyright © Taylor & Francis Group, LLC.

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DO - 10.1080/10407782.2016.1139903

M3 - RGC 21 - Publication in refereed journal

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JO - Numerical Heat Transfer; Part A: Applications

JF - Numerical Heat Transfer; Part A: Applications

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ER -

Study of three LES subgrid-scale turbulence models for predictions of heat and mass transfer in large-scale compartment fires

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