Comparison of Periodic Flow Fields in a Radial Pump among CFD, PIV, and LDV Results

The interaction between the impeller and the diffuser is considered to have a strong influence on the unsteady flow in radial pumps. In this paper, the unsteady flow in a low specific speed radial diffuser pump has been simulated by the CFD code CFX-10. Both Particle Image Velocimetry (PIV) and Lase...

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Main Authors: Jianjun Feng, F.-K. Benra, H. J. Dohmen
Format: Article
Language:English
Published: Wiley 2009-01-01
Series:International Journal of Rotating Machinery
Online Access:http://dx.doi.org/10.1155/2009/410838
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author Jianjun Feng
F.-K. Benra
H. J. Dohmen
author_facet Jianjun Feng
F.-K. Benra
H. J. Dohmen
author_sort Jianjun Feng
collection DOAJ
description The interaction between the impeller and the diffuser is considered to have a strong influence on the unsteady flow in radial pumps. In this paper, the unsteady flow in a low specific speed radial diffuser pump has been simulated by the CFD code CFX-10. Both Particle Image Velocimetry (PIV) and Laser Doppler Velocimetry (LDV) measurements have been conducted to validate the CFD results. Both the phase-averaged velocity fields and the turbulence fields obtained from different methods are presented and compared, in order to enhance the understanding of the unsteady flow caused by the relative motion between the rotating impeller and the stationary diffuser. The comparison of the results shows that PIV and LDV give nearly the same phase-averaged velocity fields, but LDV predicts the turbulence much clearer and better than PIV. CFD underestimates the turbulence level in the whole region compared with PIV and LDV but gives the same trend.
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institution Kabale University
issn 1023-621X
1542-3034
language English
publishDate 2009-01-01
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record_format Article
series International Journal of Rotating Machinery
spelling doaj-art-ba9cc96e30dc416e84c77255643d2bfe2025-02-03T01:02:09ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342009-01-01200910.1155/2009/410838410838Comparison of Periodic Flow Fields in a Radial Pump among CFD, PIV, and LDV ResultsJianjun Feng0F.-K. Benra1H. J. Dohmen2Department of Mechanical Engineering, Faculty of Engineering, University of Duisburg-Essen, 47048 Duisburg, GermanyDepartment of Mechanical Engineering, Faculty of Engineering, University of Duisburg-Essen, 47048 Duisburg, GermanyDepartment of Mechanical Engineering, Faculty of Engineering, University of Duisburg-Essen, 47048 Duisburg, GermanyThe interaction between the impeller and the diffuser is considered to have a strong influence on the unsteady flow in radial pumps. In this paper, the unsteady flow in a low specific speed radial diffuser pump has been simulated by the CFD code CFX-10. Both Particle Image Velocimetry (PIV) and Laser Doppler Velocimetry (LDV) measurements have been conducted to validate the CFD results. Both the phase-averaged velocity fields and the turbulence fields obtained from different methods are presented and compared, in order to enhance the understanding of the unsteady flow caused by the relative motion between the rotating impeller and the stationary diffuser. The comparison of the results shows that PIV and LDV give nearly the same phase-averaged velocity fields, but LDV predicts the turbulence much clearer and better than PIV. CFD underestimates the turbulence level in the whole region compared with PIV and LDV but gives the same trend.http://dx.doi.org/10.1155/2009/410838
spellingShingle Jianjun Feng
F.-K. Benra
H. J. Dohmen
Comparison of Periodic Flow Fields in a Radial Pump among CFD, PIV, and LDV Results
International Journal of Rotating Machinery
title Comparison of Periodic Flow Fields in a Radial Pump among CFD, PIV, and LDV Results
title_full Comparison of Periodic Flow Fields in a Radial Pump among CFD, PIV, and LDV Results
title_fullStr Comparison of Periodic Flow Fields in a Radial Pump among CFD, PIV, and LDV Results
title_full_unstemmed Comparison of Periodic Flow Fields in a Radial Pump among CFD, PIV, and LDV Results
title_short Comparison of Periodic Flow Fields in a Radial Pump among CFD, PIV, and LDV Results
title_sort comparison of periodic flow fields in a radial pump among cfd piv and ldv results
url http://dx.doi.org/10.1155/2009/410838
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