Computational study of decaying annular vortex flow using the r ε/k-ε turbulence model
In this article, we present three dimensional CFD study of turbulent vortex flow in an annular passage using OpenFOAM 1.6. The vortex flow is generated by introducing the flow through a tangential entry to the passage. For the analysis presented in this article, turbulence was modeled using the Rε/k...
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Online Access: | http://eprints.utm.my/id/eprint/46724/1/Khalid%20M.Saqr_2012_Computational%20study%20of%20decaying%20annular%20vortex%20flow.pdf http://eprints.utm.my/id/eprint/46724/ https://dx.doi.org/10.1016/j.apm.2011.11.082 |
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my.utm.467242017-09-30T00:46:05Z http://eprints.utm.my/id/eprint/46724/ Computational study of decaying annular vortex flow using the r ε/k-ε turbulence model M. Saqr, Khalid Kassem, Hassan I. Aly, Hossam S. Abdul Wahid, Mazlan QA Mathematics In this article, we present three dimensional CFD study of turbulent vortex flow in an annular passage using OpenFOAM 1.6. The vortex flow is generated by introducing the flow through a tangential entry to the passage. For the analysis presented in this article, turbulence was modeled using the Rε/k − ε model, in addition, a comparison between such model with the standard k − ε model was conducted and discussed. The main characteristics of the flow such as vortex structure and recirculation zone were investigated. It was found that flow is subjected to Rankine vortex structure with three forced vortex regimes and a free vortex region near to the outer wall. The phenomenon of vortex decay was investigated by depicting the swirl number trend along the axial direction of the flow domain. It was found that the vortex decay is subjected to an exponential decay behavior. New coefficients for the exponential decay correlation were derived based on local values of velocity components in different radial planes. 2012 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/46724/1/Khalid%20M.Saqr_2012_Computational%20study%20of%20decaying%20annular%20vortex%20flow.pdf M. Saqr, Khalid and Kassem, Hassan I. and Aly, Hossam S. and Abdul Wahid, Mazlan (2012) Computational study of decaying annular vortex flow using the r ε/k-ε turbulence model. Applied Mathematical Modelling, 36 (10). pp. 4652-4664. ISSN 0307-904X https://dx.doi.org/10.1016/j.apm.2011.11.082 |
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QA Mathematics M. Saqr, Khalid Kassem, Hassan I. Aly, Hossam S. Abdul Wahid, Mazlan Computational study of decaying annular vortex flow using the r ε/k-ε turbulence model |
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In this article, we present three dimensional CFD study of turbulent vortex flow in an annular passage using OpenFOAM 1.6. The vortex flow is generated by introducing the flow through a tangential entry to the passage. For the analysis presented in this article, turbulence was modeled using the Rε/k − ε model, in addition, a comparison between such model with the standard k − ε model was conducted and discussed. The main characteristics of the flow such as vortex structure and recirculation zone were investigated. It was found that flow is subjected to Rankine vortex structure with three forced vortex regimes and a free vortex region near to the outer wall. The phenomenon of vortex decay was investigated by depicting the swirl number trend along the axial direction of the flow domain. It was found that the vortex decay is subjected to an exponential decay behavior. New coefficients for the exponential decay correlation were derived based on local values of velocity components in different radial planes. |
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Article |
author |
M. Saqr, Khalid Kassem, Hassan I. Aly, Hossam S. Abdul Wahid, Mazlan |
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M. Saqr, Khalid Kassem, Hassan I. Aly, Hossam S. Abdul Wahid, Mazlan |
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M. Saqr, Khalid |
title |
Computational study of decaying annular vortex flow using the r ε/k-ε turbulence model |
title_short |
Computational study of decaying annular vortex flow using the r ε/k-ε turbulence model |
title_full |
Computational study of decaying annular vortex flow using the r ε/k-ε turbulence model |
title_fullStr |
Computational study of decaying annular vortex flow using the r ε/k-ε turbulence model |
title_full_unstemmed |
Computational study of decaying annular vortex flow using the r ε/k-ε turbulence model |
title_sort |
computational study of decaying annular vortex flow using the r ε/k-ε turbulence model |
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2012 |
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http://eprints.utm.my/id/eprint/46724/1/Khalid%20M.Saqr_2012_Computational%20study%20of%20decaying%20annular%20vortex%20flow.pdf http://eprints.utm.my/id/eprint/46724/ https://dx.doi.org/10.1016/j.apm.2011.11.082 |
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1643652121355091968 |
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13.18916 |