Effect of splitter blades on turbine mode of low specific speed pump

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU151723" target="_blank" >RIV/00216305:26210/24:PU151723 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01003/epjconf_efm2024_01003.html" target="_blank" >https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01003/epjconf_efm2024_01003.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/202429901003" target="_blank" >10.1051/epjconf/202429901003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of splitter blades on turbine mode of low specific speed pump

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Effect of splitter blades on turbine mode of low specific speed pump

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/TK70020001" target="_blank" >TK70020001: Digitalizace infrastruktury dodávky pitné vody pro optimalizaci vztahu voda-energie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Experimental Fluid Mechanics 2022

ISBN

—

ISSN

2100-014X

e-ISSN

—

Počet stran výsledku

13

Strana od-do

1-13

Název nakladatele

EDP Sciences

Místo vydání

neuveden

Místo konání akce

Dvůr Králové nad Labem

Datum konání akce

29. 11. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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