Low Specific Speed Pumps with Atypical Impellers
The result's identifiers
Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Low Specific Speed Pumps with Atypical Impellers
Original language description
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
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
BK - Liquid mechanics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/EE2.3.30.0005" target="_blank" >EE2.3.30.0005: Support of Interdisciplinary Excellence Research Teams Establishment at BUT</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů