On the Flow Behavior in Rotor-Stator System with Superposed Flow
The flow between a rotor and a stator at high Reynolds number and small Ekman number is divided into three domains, two boundary layers adjacent to the discs separated by a central core. In the present work, a simple theoretical approach provides analytical solutions for the radial distribution of t...
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Series: | International Journal of Rotating Machinery |
Online Access: | http://dx.doi.org/10.1155/2008/719510 |
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doaj-ae1b6b345eb74bf6b9a568a9901155ba2020-11-24T21:34:00ZengHindawi LimitedInternational Journal of Rotating Machinery1023-621X1542-30342008-01-01200810.1155/2008/719510719510On the Flow Behavior in Rotor-Stator System with Superposed FlowRoger Debuchy0Fadi Abdel Nour1Gérard Bois2Laboratoire de Mécanique de Lille, CNRS UMR 8107, Ecole Nationale Supérieure d'Arts et Métiers (ENSAM), 8 Boulevard Louis XIV, 59046 Lille Cedex, FranceLaboratoire de Mécanique de Lille, CNRS UMR 8107, Ecole Nationale Supérieure d'Arts et Métiers (ENSAM), 8 Boulevard Louis XIV, 59046 Lille Cedex, FranceLaboratoire de Mécanique de Lille, CNRS UMR 8107, Ecole Nationale Supérieure d'Arts et Métiers (ENSAM), 8 Boulevard Louis XIV, 59046 Lille Cedex, FranceThe flow between a rotor and a stator at high Reynolds number and small Ekman number is divided into three domains, two boundary layers adjacent to the discs separated by a central core. In the present work, a simple theoretical approach provides analytical solutions for the radial distribution of the core swirl ratio valid for a rotor-stator system with a superposed radial inflow rate. At first, the flow in the rotor boundary layer is assumed to behave as expressed by Owen and Rogers (1989) in the case of a turbulent flow on a rotating single disc. On the stator side, a necessary compensation flow rate must take place according to the conservation of mass. It is found that this compensation flow rate cannot be estimated with a good accuracy using the hypotheses of a stationary disc in a rotating fluid by Owen and Rogers (1989). Thus, two innovative weighting functions are tested, leading to new analytical laws relating the core swirl ratio K to the coefficient of flow rate Cqr introduced by Poncet et al. (2005). The adequacy between the theoretical solutions and numerous results of the literature is clearly improved and the discussion allows a better understanding of the flow behavior.http://dx.doi.org/10.1155/2008/719510 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Roger Debuchy Fadi Abdel Nour Gérard Bois |
spellingShingle |
Roger Debuchy Fadi Abdel Nour Gérard Bois On the Flow Behavior in Rotor-Stator System with Superposed Flow International Journal of Rotating Machinery |
author_facet |
Roger Debuchy Fadi Abdel Nour Gérard Bois |
author_sort |
Roger Debuchy |
title |
On the Flow Behavior in Rotor-Stator System with Superposed Flow |
title_short |
On the Flow Behavior in Rotor-Stator System with Superposed Flow |
title_full |
On the Flow Behavior in Rotor-Stator System with Superposed Flow |
title_fullStr |
On the Flow Behavior in Rotor-Stator System with Superposed Flow |
title_full_unstemmed |
On the Flow Behavior in Rotor-Stator System with Superposed Flow |
title_sort |
on the flow behavior in rotor-stator system with superposed flow |
publisher |
Hindawi Limited |
series |
International Journal of Rotating Machinery |
issn |
1023-621X 1542-3034 |
publishDate |
2008-01-01 |
description |
The flow between a rotor and a stator at high Reynolds number and small Ekman number is divided into three domains, two boundary layers adjacent to the discs separated by a central core. In the present work, a simple theoretical approach provides analytical solutions for the radial distribution of the core swirl ratio valid for a rotor-stator system with a superposed radial inflow rate. At first, the flow in the rotor boundary layer is assumed to behave as expressed by Owen and Rogers (1989) in the case of a turbulent flow on a rotating single disc. On the stator side, a necessary compensation flow rate must take place according to the conservation of mass. It is found that this compensation flow rate cannot be estimated with a good accuracy using the hypotheses of a stationary disc in a rotating fluid by Owen and Rogers (1989). Thus, two innovative weighting functions are tested, leading to new analytical laws relating the core swirl ratio K to the coefficient of flow rate Cqr introduced by Poncet et al. (2005). The adequacy between the theoretical solutions and numerous results of the literature is clearly improved and the discussion allows a better understanding of the flow behavior. |
url |
http://dx.doi.org/10.1155/2008/719510 |
work_keys_str_mv |
AT rogerdebuchy ontheflowbehaviorinrotorstatorsystemwithsuperposedflow AT fadiabdelnour ontheflowbehaviorinrotorstatorsystemwithsuperposedflow AT gerardbois ontheflowbehaviorinrotorstatorsystemwithsuperposedflow |
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