Detail publikace
Effect of splitter blades on turbine mode of low specific speed pump
BEZDÍČEK, J. CHABANNES, L. ŠTEFAN, D.
Anglický název
Effect of splitter blades on turbine mode of low specific speed pump
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
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.
Anglický abstrakt
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.
Klíčová slova anglicky
centrifugal pump; splitter blades, turbine mode; enthropy production
Vydáno
04.07.2024
Nakladatel
EPJ Web of Conferences
ISSN
2100-014X
Kniha
Experimental Fluid Mechanics 2022
Ročník
299
Číslo
1
Strany od–do
1–13
Počet stran
13
BIBTEX
@inproceedings{BUT189101,
author="Jiří {Bezdíček} and Lilian {Chabannes} and David {Štefan},
title="Effect of splitter blades on turbine mode of low specific speed pump",
booktitle="Experimental Fluid Mechanics 2022",
year="2024",
volume="299",
number="1",
month="July",
pages="1--13",
publisher="EPJ Web of Conferences",
issn="2100-014X"
}