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Assessment of a common nonlinear eddy-viscosity turbulence model in capturing laminarization in mixed convection flows

Keshmiri, Amir, Revell, Alistair and Darabkhani, Hamidreza Gohari (2015) Assessment of a common nonlinear eddy-viscosity turbulence model in capturing laminarization in mixed convection flows. Numerical Heat Transfer, Part A: Applications, 69 (2). pp. 146-165. ISSN 1040-7782

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Abstract or description

Laminarization is an important topic in heat transfer and turbulence modelling. Recent studies have demonstrated that several well-known turbulence models, failed to provide accurate prediction when applied to mixed convection flows with significant re-laminarization effects. One of those models, a well-validated cubic non-linear eddy-viscosity model, was observed to miss entirely this feature. This paper studies the reasons behind this failure by providing a detailed comparison with the baseline Launder-Sharma model. The difference is attributed to the method of near-wall damping. A range of tests have been conducted and two noteworthy findings are reported for the case of flow re-laminarization.

Item Type: Article
Faculty: School of Creative Arts and Engineering > Engineering
Depositing User: Hamidreza GOHARI DARABKHANI
Date Deposited: 04 Mar 2019 14:49
Last Modified: 04 Mar 2019 14:49
URI: http://eprints.staffs.ac.uk/id/eprint/5431

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