Publication detail
Simulation and dynamics of secondary vortex structures induced by low discharge and high swirl in cylindrical pipe
ŠTEFAN, D. RUDOLF, P. POCHYLÝ, F.
English title
Simulation and dynamics of secondary vortex structures induced by low discharge and high swirl in cylindrical pipe
Type
article in a collection out of WoS and Scopus
Language
en
Original abstract
The fluid flow in pipe with low discharge and high swirl is convenient for formation of secondary flow structures. The onset of secondary vortex structures is driven by flow disturbances, i.e., pressure pulsations, local change of geometry, etc. Such situation might for example appears in the suction part of centrifugal pump operated at low discharge. Once these flow conditions appear in the suction of centrifugal pump, the flow is unstable and the pump performance is affected in terms of delivery head drop. The vortex structures forms flow blockage and since their spatial shape is not axi-symmetric there is also significant flow dynamics. This work presents the results of numerical calculation by means of CFD simulation of corresponding flow regime of centrifugal pump. The focus is on description of vortex structures dynamics which is important for further application of flow control devices to enhance pump operation.
English abstract
The fluid flow in pipe with low discharge and high swirl is convenient for formation of secondary flow structures. The onset of secondary vortex structures is driven by flow disturbances, i.e., pressure pulsations, local change of geometry, etc. Such situation might for example appears in the suction part of centrifugal pump operated at low discharge. Once these flow conditions appear in the suction of centrifugal pump, the flow is unstable and the pump performance is affected in terms of delivery head drop. The vortex structures forms flow blockage and since their spatial shape is not axi-symmetric there is also significant flow dynamics. This work presents the results of numerical calculation by means of CFD simulation of corresponding flow regime of centrifugal pump. The focus is on description of vortex structures dynamics which is important for further application of flow control devices to enhance pump operation.
Keywords in English
centrifugal pump; inlet re-circulation, vortex, pressure pulsations
Released
30.11.2024
Publisher
University of West Bohemia
Location
Plzeň, Czech Republic
ISBN
978-80-261-1249-5
Book
PROCEEDINGS OF COMPUTATIONAL MECHANICS 2024
Pages from–to
164–166
Pages count
3
BIBTEX
@inproceedings{BUT193667,
author="David {Štefan} and Pavel {Rudolf} and František {Pochylý},
title="Simulation and dynamics of secondary vortex structures induced by low discharge and high swirl in cylindrical pipe",
booktitle="PROCEEDINGS OF COMPUTATIONAL MECHANICS 2024",
year="2024",
month="November",
pages="164--166",
publisher="University of West Bohemia",
address="Plzeň, Czech Republic",
isbn="978-80-261-1249-5"
}