Low Specific Speed Pumps with Atypical Impellers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F13%3APU106669" target="_blank" >RIV/00216305:26210/13:PU106669 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Low Specific Speed Pumps with Atypical Impellers

Popis výsledku v původním jazyce

Low specific speed pumps are usually characterized by relatively low hydraulic efficiency. This fact is usually attributed to so called local eddy, which develops within the blade channel and causes flow blockage. Modified impellers with very thick trailing edges and recirculation channels were designed to improve pump performance. Unsteady CFD simulations and experimental measurements were carried out for original and modified impellers. Contribution will discuss influence of the new design on stability of the characteristic curve, energy dissipation and pressure pulsations within the spiral case. Dissipation function is evaluated in different parts of the spiral case and correlation between the hydraulic loss and filling of the spiral case by liquidis drawn for the particular impeller designs. The impeller with channels (i.e. with thick trailing edges) reaches at low flow rates higher hydraulic efficiency in comparison with conventional impeller with blades. Recirculation channels d

Název v anglickém jazyce

Low Specific Speed Pumps with Atypical Impellers

Popis výsledku anglicky

Low specific speed pumps are usually characterized by relatively low hydraulic efficiency. This fact is usually attributed to so called local eddy, which develops within the blade channel and causes flow blockage. Modified impellers with very thick trailing edges and recirculation channels were designed to improve pump performance. Unsteady CFD simulations and experimental measurements were carried out for original and modified impellers. Contribution will discuss influence of the new design on stability of the characteristic curve, energy dissipation and pressure pulsations within the spiral case. Dissipation function is evaluated in different parts of the spiral case and correlation between the hydraulic loss and filling of the spiral case by liquidis drawn for the particular impeller designs. The impeller with channels (i.e. with thick trailing edges) reaches at low flow rates higher hydraulic efficiency in comparison with conventional impeller with blades. Recirculation channels d

Druh

O - Ostatní výsledky

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/EE2.3.30.0005" target="_blank" >EE2.3.30.0005: Podpora tvorby excelentních týmů mezioborového výzkumu na VUT</a><br>

Návaznosti

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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