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Evaluation of confined natural and forced convection predictions by different turbulence models

Evaluation of confined natural and forced convection predictions by different turbulence models Purpose – The purpose of this paper is to evaluate the capacity of two equation turbulence models to reproduce mean and fluctuating quantities in the case of both natural convection and isothermal flows. Design/methodology/approach – Numerical predictions of mean velocity profiles, air and wall temperatures as well as turbulent kinetic energy by three different two equation models (standard k ‐ ϵ , renormalisation group k ‐ ϵ and shear‐stress transport‐ k ‐ ω ) are compared with corresponding experimental values. Findings – The prediction of mean velocities and temperatures is in all cases satisfactory. On the other hand, the prediction of turbulent quantities is less precise. Originality/value – The three models under consideration in this paper can be used for engineering applications such as HVAC calculations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Numerical Methods for Heat and Fluid Flow Emerald Publishing

Evaluation of confined natural and forced convection predictions by different turbulence models

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References (37)

Publisher
Emerald Publishing
Copyright
Copyright © 2009 Emerald Group Publishing Limited. All rights reserved.
ISSN
0961-5539
DOI
10.1108/09615530910922125
Publisher site
See Article on Publisher Site

Abstract

Purpose – The purpose of this paper is to evaluate the capacity of two equation turbulence models to reproduce mean and fluctuating quantities in the case of both natural convection and isothermal flows. Design/methodology/approach – Numerical predictions of mean velocity profiles, air and wall temperatures as well as turbulent kinetic energy by three different two equation models (standard k ‐ ϵ , renormalisation group k ‐ ϵ and shear‐stress transport‐ k ‐ ω ) are compared with corresponding experimental values. Findings – The prediction of mean velocities and temperatures is in all cases satisfactory. On the other hand, the prediction of turbulent quantities is less precise. Originality/value – The three models under consideration in this paper can be used for engineering applications such as HVAC calculations.

Journal

International Journal of Numerical Methods for Heat and Fluid FlowEmerald Publishing

Published: Jan 9, 2009

Keywords: Turbulence; Modelling; Numerical analysis; Predictive processes; Convection; Flow

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