Numerical Investigations of Unsteady Flow in a Centrifugal Pump with a Vaned Diffuser
Joint Authors
Source
International Journal of Rotating Machinery
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-07-02
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Computational fluid dynamics (CFD) analyses were made to study the unsteady three-dimensional turbulence in the ERCOFTAC centrifugal pump test case.
The simulations were carried out using the OpenFOAM Open Source CFD software.
The test case consists of an unshrouded centrifugal impeller with seven blades and a radial vaned diffuser with 12 vanes.
A large number of measurements are available in the radial gap between the impeller and the diffuse, making this case ideal for validating numerical methods.
Results of steady and unsteady calculations of the flow in the pump are compared with the experimental ones, and four different turbulent models are analyzed.
The steady simulation uses the frozen rotor concept, while the unsteady simulation uses a fully resolved sliding grid approach.
The comparisons show that the unsteady numerical results accurately predict the unsteadiness of the flow, demonstrating the validity and applicability of that methodology for unsteady incompressible turbomachinery flow computations.
The steady approach is less accurate, with an unphysical advection of the impeller wakes, but accurate enough for a crude approximation.
The different turbulence models predict the flow at the same level of accuracy, with slightly different results.
American Psychological Association (APA)
Petit, Olivier& Nilsson, Håkan. 2013. Numerical Investigations of Unsteady Flow in a Centrifugal Pump with a Vaned Diffuser. International Journal of Rotating Machinery،Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-511694
Modern Language Association (MLA)
Petit, Olivier& Nilsson, Håkan. Numerical Investigations of Unsteady Flow in a Centrifugal Pump with a Vaned Diffuser. International Journal of Rotating Machinery No. 2013 (2013), pp.1-14.
https://search.emarefa.net/detail/BIM-511694
American Medical Association (AMA)
Petit, Olivier& Nilsson, Håkan. Numerical Investigations of Unsteady Flow in a Centrifugal Pump with a Vaned Diffuser. International Journal of Rotating Machinery. 2013. Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-511694
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-511694