A new turbulence model for near-wall natural convection

W. Xu; Q. Chen; F. T.M. Nieuwstadt

doi:10.1016/S0017-9310(98)00081-7

A new turbulence model for near-wall natural convection

W. Xu
, Q. Chen
, F. T.M. Nieuwstadt

Department of Building Environment and Energy Engineering

Research output: Journal article publication › Journal article › Academic research › peer-review

77 Citations (Scopus)

Abstract

Current turbulence models for simulating natural convection require too much computation time or do not give sufficiently accurate results. A one-equation near-wall model is developed that incorporates the use of direct numerical simulation data (Ra=5.4×10⁵) to remedy these shortcomings. The use of this near-wall model along with the standard k-ε model for the outer-wall region, yields good predictions for mean flow and turbulence in natural convection and significantly reduces computational cost.

Original language	English
Pages (from-to)	3161-3176
Number of pages	16
Journal	International Journal of Heat and Mass Transfer
Volume	41
Issue number	21
DOIs	https://doi.org/10.1016/S0017-9310(98)00081-7
Publication status	Published - Nov 1998

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/S0017-9310(98)00081-7

Cite this

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abstract = "Current turbulence models for simulating natural convection require too much computation time or do not give sufficiently accurate results. A one-equation near-wall model is developed that incorporates the use of direct numerical simulation data (Ra=5.4×105) to remedy these shortcomings. The use of this near-wall model along with the standard k-ε model for the outer-wall region, yields good predictions for mean flow and turbulence in natural convection and significantly reduces computational cost.",

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AU - Chen, Q.

AU - Nieuwstadt, F. T.M.

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N2 - Current turbulence models for simulating natural convection require too much computation time or do not give sufficiently accurate results. A one-equation near-wall model is developed that incorporates the use of direct numerical simulation data (Ra=5.4×105) to remedy these shortcomings. The use of this near-wall model along with the standard k-ε model for the outer-wall region, yields good predictions for mean flow and turbulence in natural convection and significantly reduces computational cost.

AB - Current turbulence models for simulating natural convection require too much computation time or do not give sufficiently accurate results. A one-equation near-wall model is developed that incorporates the use of direct numerical simulation data (Ra=5.4×105) to remedy these shortcomings. The use of this near-wall model along with the standard k-ε model for the outer-wall region, yields good predictions for mean flow and turbulence in natural convection and significantly reduces computational cost.

UR - https://www.scopus.com/pages/publications/0032211006

U2 - 10.1016/S0017-9310(98)00081-7

DO - 10.1016/S0017-9310(98)00081-7

M3 - Journal article

AN - SCOPUS:0032211006

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SP - 3161

EP - 3176

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

IS - 21

ER -

A new turbulence model for near-wall natural convection

Abstract

ASJC Scopus subject areas

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