Effect of splitter blades on turbine mode of low specific speed pump
Loading...
Date
2024-07-04
Authors
Bezdíček, Jiří
Chabannes, Lilian
Štefan, David
ORCID
0000-0003-4230-5219Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
EDP Sciences
Altmetrics
Abstract
The use of pump in turbine mode is an evolving research field. This article is mainly focused on the influence of splitter blades on the turbine mode of pump exclusively. CFD analysis on low specific speed pump geometry was performed. The geometry of sidewall gaps spaces between the rotor and stator system was also included in the computational model. Flow phenomena were compared with quantification of losses. In this case, entropy production theory was used for loss analysis. The effect of different computational meshes and turbulence models on the low-specific speed machine was also questioned. The numerical approach was used not only to obtain turbine characteristics and evaluate the effect of splitter-blades on the machine, which was main goal of this work but also to describe flow or carry out hydraulic loss analysis and visualise areas of most dominant losses. Volumetric efficiency, hydraulic forces, and influence of flow in sidewall gaps on torque generation were also investigated. The numerical model was validated using experimental data. Probable reasons for the difference between the experiment and simulation were estimated.
Description
Citation
EPJ Web of Conferences. 2024, vol. 299, issue 1, p. 1-13.
https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01003/epjconf_efm2024_01003.html
https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01003/epjconf_efm2024_01003.html
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en